The flexibility to manage your own time is invaluable.
Sometimes managing your friends really sucks.
It's possible to get accustomed to anything. Make bloody sure you are aware of what you've become accustomed to.
Curiosity is worth looking for, especially in technical interviews.
Learn to say "I don't know." If used when appropriate, it will be often.
Science makes me feel stupid too. It's just that I've gotten used to it.
Rationality will not save us.
Avoid having your ego so close to your position that when your position falls, your ego goes with it.
Ninety percent of the time things will turn out worse than you expect. The other 10 percent of the time you had no right to expect so much.
If you do not work on an important problem, it's unlikely you'll do important work.