If you want to do something, one of the smartest things that you can do is go find someone that’s done it and to try to get them to show you how they did it, to show you where the potholes are. What are the right steps to get there? ... And not just in terms of where to go to school, but what are the things that are really tough that you have to overcome, and how did you overcome it.

But whenever you do find something — maybe it’s not as passionate for you as dog mushing has been for me — but the fact that you have any interest, that is what you should go with.

The sky has turned brighter. There is a glorious rainbow that beckons those with the spirit of adventure. And there are rich findings at the end of that rainbow. To the young and the not too old, I say, look at the horizon, find that rainbow, go ride it. Not all will be rich; quite a few will find a vein of gold; but all who pursue that rainbow will have a joyous and exhilarating ride and some profit.

Certainly, if you want to get into the field of biology these days, you should also study anthropology because so much work now is with communities. How do you help communities? How do you convince communities to protect their environment? — Especially if, let’s say, you have a tiger eating your cows. The natural gesture is to kill that tiger. Well, what are the alternatives? That’s the kind of thing one is now increasingly working with.

It took me a while to realize that the internet would be the single best way to make technology accessible to more people. As soon as I did, I changed course and decided to pursue my dreams at Google.

The second filter is to gravitate towards working on hard things. I’d love to tell you I was an immediate success after leaving Stanford… I wasn’t. Even a decade later, I felt like I wasn’t on the right path, and it took me a while to find my footing. Until I applied to Google. I had my final interview there in 2004, it was April Fool’s Day and the day Gmail launched. So when my interviewers asked me about it, I wasn’t sure if it was a joke or a real product. That’s because at the time, one gigabyte of free storage for everyone felt super ambitious, and almost impossible. A couple years into the job, I got my chance to work on a seemingly impossible problem, too. It was around this time that the internet was moving into a new phase. The web was evolving from simple web pages to rich applications. There was a group of us that felt we could reimagine the browser to be much better and faster, and we had an early prototype that we thought was pretty good. Internally there was a consensus that building a browser would be incredibly difficult, requiring hundreds of engineers; we had a group of about ten. The consensus was right. It was going to be really hard. In some ways we were naive, and it's good to be a bit irrational when you approach new things. And in 2008, we launched what we thought was a great browser. We had eight million users in the first twenty-four hours, and the reviews were really positive. And then user growth stagnated. After a year, we had around two percent share. I remember Steve Ballmer, the CEO of Microsoft, made fun of Chrome in an interview and called it a rounding error. It could have been demoralizing. But with that California optimism, I told the team that the fact he went out of his way to dismiss us meant we were doing something right. We kept going, setting highly aggressive stretch goals to keep the team pushing. We rapidly iterated, shipping the browser every six weeks while others shipped one maybe every six months to a year. Success began to follow. Working on hard things has taught me a lot: It typically attracts other great and optimistic people. And even if you miss meeting the high goals you set, you’ll still achieve something great. So when you have the choice to work on something hard — say yes. Do what excites you