Pure gold from Patrick McKenzie. I recommend reading the whole article.

Working in a startup is a career path but, more than that, it is a lifestyle choice. This is similar to working in investment banking or academia. Those are three very different lifestyles. Many people will attempt to sell you those lifestyles as being in your interests, for their own reasons. If you genuinely would enjoy that lifestyle, go nuts. If you only enjoy certain bits of it, remember that many things are available a la carte if you really want them. For example, if you want to work on cutting-edge technology but also want to see your kids at 5:30 PM, you can work on cutting-edge technology at many, many, many megacorps.

So, so good.

At the end of the day, your life happiness will not be dominated by your career. Either talk to older people or trust the social scientists who have: family, faith, hobbies, etc etc generally swamp career achievements and money in terms of things which actually produce happiness. Optimize appropriately. Your career is important, and right now it might seem like the most important thing in your life, but odds are that is not what you’ll believe forever. Work to live, don’t live to work.