We stopped updating the key ideas series in 2023. If you’re new to 80,000 Hours, we now recommend starting with our career guide, and then our advanced series if you’d like something more in-depth. We’ve left the series up since some readers prefer it. Most of the individual articles are still part of the advanced series and so kept up-to-date, but the others have been left as they were in early 2023.

Table of Contents

Your career is your biggest opportunity to make a difference. But how can you make the most of it? We’ve spent the last 10 years searching for the answer to that question.

We’ve found that some of the paths open to you probably have far more impact than others, but they’re often not what people are already focused on. This means we need to rethink social impact careers — and that by applying this new perspective, there’s a chance you can find a career that’s both higher impact and just as satisfying as your current path.

In the series, you’ll learn about the ideas that have most changed our view of what makes for a high-impact career. We start with how to define impact, and then go on to three key drivers of your impact, which you can use to compare your options in terms of the difference they make. Finally, we introduce the most important elements of career strategy.

There are about 20 key articles, which you can read over a weekend. At the end you’ll have covered everything you need to know to start making a new career plan. There are also optional secondary articles, a podcast interview, and a two-minute summary.

All this might sound like a lot of work, but if you can increase the impact of the 80,000 hours of your career by just 1%, it would be worth spending up to 800 hours learning how to do that. And we think we can increase your impact by much more, and in much less time. So let’s dive in.

1. Introduction


Hear our founder and president, Benjamin Todd, discuss some of the most important ideas in the series in episode #71 of The 80,000 Hours Podcast.

Careers decisions are highly individual, so there are many questions we can’t easily help with. We aim to focus on career questions that are more widely relevant. To answer the questions we tackle, we draw on:

  • Expert interviews — you can listen to over 60 examples of these interviews on our podcast, and also see the results of some anonymous interviews. Our first pass on many questions involves synthesising what several experts say on the question.
  • Academic literature — we aim to draw on academic literature where it’s available, such as the literature on existential threats, the distribution of productivity in different fields, and how to make good decisions. We’re also affiliated with some academic partners.
  • Advising our readers — we’ve given one-on-one advice to over 2,000 people since 2011, many of whom we’re still in touch with. This gives us a sense of what mistakes are common, as well as some indication of how decisions play out over time.

It’s not usually possible to confidently answer the kinds of questions we tackle. However, we do our best to synthesise the sources of evidence we draw on, using our research principles. We also aim to highlight the key aspects of our reasoning so that readers can make their own assessments.

The topics we tackle are complex, and in the past we’ve noticed people interpreting our advice in ways we didn’t intend. Here are some points to bear in mind before diving into our advice.

  • We want our writing to inform people’s views, but only in proportion to the likelihood that we are correct. Given that, it’s important to keep in mind that we’ve been wrong before and we’ll be wrong again. We’ve spent a lot of time thinking about these issues, but we still have a lot to learn. Our positions often change every couple of years, and due to the nature of the questions we take on we’re rarely more than about 70% confident in our answers. You should try to strike a balance between what we think and your previous position, depending on the strength of the arguments and how much you already knew about the topic.

  • It’s extremely difficult to give universally applicable career advice. The most important issue here is that which option is best for you depends a huge amount on your skills and circumstances, and the specific details of the opportunity. So, while we might highlight path A more than path B, the best opportunities in path B will often be better than the typical opportunities in path A. Moreover, your personal circumstances could easily mean the best option for you is in path B. So, treat the specific options we mention as an aid for compiling your personal list of career ideas. Also keep in mind that many issues in career choice are a matter of balancing opposing considerations — for instance, if we say people put too much emphasis on X, there will usually be some readers who put too little emphasis on X, and need to hear the opposite advice.

  • Our advice is aimed at a particular audience: namely, people with college degrees who want to make having a positive impact (from an impartial perspective) the main focus of their careers, especially in the problem areas we most recommend; who live in rich, (for the most part) English-speaking countries; and who want to take an analytical approach to their career. At any given moment many people need to focus on taking care of their own lives, and we don’t think anyone should feel guilty if that’s the case. Certain parts of our advice, such as our list of priority paths, are especially aimed at people who are unusually high achieving. In general, the more similar you are to our core audience, the more useful the advice will be, although much of what we write is useful to anyone who wants to make a difference.

  • Treat increasing your impact as just one long-term goal. Working on the world’s most pressing problems is among the most worthwhile challenges we can imagine, though it can also be overwhelming. Bear in mind, the primary focus of 80,000 Hours is increasing your impact, and this sounds to some like we don’t care about other goals. However, the team sees increasing our impact as just one important goal among several in our lives, which means we often do things that aren’t optimal from the perspective of doing good. Indeed, even if your only goal was to have an impact, to do that it’s vital to do something you can stick with for years — and this means taking care of your personal priorities as well.

  • Aim for steady progress rather than perfection. It can take a long time to work out how to factor the ideas we cover into your own plans and find the right opportunity. Along the way, because there’s always more that could be done, it can be easy to become overly perfectionist, get caught up with comparisons, and never be satisfied. When using our advice, the aim is not to find the (unknowable and unattainable) perfect option, or have more impact than other people. Rather, focus on making steady progress towards the best career that’s practical for you given your constraints.

  • Older articles on the site are less likely to reflect our current views, so check their publication date. We also aim to keep this key ideas page up to date as the canonical source of advice, and to flag older articles when our views have changed, though we have hundreds of pages of content, so we don’t catch everything.

Read more.

2. Foundations: what does it mean to make a difference?

  • We think ‘making a difference’ is best understood as being about the number of people whose lives you improve and how much you improve them by — regardless of who they are or when they’re living. In this article we try to summarise 2,400 years of philosophical thought to explain why.

  • The case for why the best thing to do with your career could be making sure the future is as good as possible, and what that might imply.

  • We can be uncertain about matters of fact, like whether it’ll rain tomorrow, but we can also be uncertain about moral claims. How we approach this uncertainty can have important implications for our actions.

3. Global priorities: what’s the world’s most pressing problem?

4. Contribution: which career paths give you the best opportunities to tackle global problems?

5. Personal fit: what are you good at?

6. Strategy: how to find your best career

7. Conclusion: how much do careers differ in impact?

What’s next Make your new career plan

Now that you’ve read the series, here are two ways we can help you update your career plan, and put these ideas into action:

1. Speak to our team one-on-one

If you’re interested in working on one of our top problem areas, our advising team might be able to speak with you one-on-one. They can help you consider your options, make connections with others working on these issues, and possibly even help you find jobs or funding opportunities. (It’s free.)

Speak to our team

2. Use our planning series to write your plan

If you want to think more about your plan first, sign up to our eight-week career planning series. It takes everything we’ve learned about career planning and turns it into a series of tips, prompts, and resources to help you clarify your longer-term goals and turn them into actionable next steps. It’s designed to be useful no matter which problems and career paths you want to focus on.

Sign up to receive the series through a weekly email, or you can see everything online.