- Over the short term there are a lot of variables to success other than being a smart, hard working, good person. Over the long term things start to even out.
- Being smart is the price of entry, but drive matters more. (The #1 & #2 people from my high school class of 500+ had nominal professional success. The breakout successes were the 5'2" guy who made the basketball team, and the chunky musician who never missed a class 6-12. Both were smart, but their drive carried them.)
- If you see a partial ethical lapse from someone, the odds are there are more full lapses to follow. Give second chances for a lot of failures, but not ethical lapses.
- The group of who you is important to you shrinks, not grows over time.
- Somehow you have a lot less free time when you have the so-called "boring, married and 2 kids" life. It's still worth doing. (Kids are simultaneously much more time than you'd imagine, much more frustration, and much more awesome)
- Be smart about money. Remember that every dollar of debt needs to be paid back. Would the future you say, "I really wish I had pissed away X getting..."
- Throw out stuff. You won't miss it, and there's a cost of carrying it around. Spend on experience instead.
- With alcohol, go for quality over quantity. You'll spend less money for a better experience.
- It's not worth spending time with negative people.
- Don't wait until you have a daughter to lose the sexism.
- Go to the dentist and doctor regularly, and listen to them.
- Prepare to reinvent yourself multiple times.
- Most of your peer group won't achieve the success that they assume will happen naturally. (Life is a pyramid scheme, and what gets you across the first few steps won't get you past the next few, and lots of people drop off along the way)
- Luck matters a lot, but operate like it doesn't at all.
- Be twice as responsible as you think you need to be, because you don't know the other person's perception. Assume the other person will only be half as responsible.
- If you see warning signs at work, move quickly, leaving the handcuffs behind. They won't stay gold for long.
- Take the soft classes seriously.
- Become so talented that you're the "Go To" person, and such a good teacher that you've replaced yourself by the time you want to go to bigger and better things.
- With other people, you sometimes have to choose between Being Right and Having a Relationship. There's no loss of character for keeping quiet.
- Confidence inspires confidence. It's ok to commit on 80% certainty when the other guy is committing on 60%.