It really is true that you become an average of the people you spend the most time with.

Startups are not the best choice for work-life balance, and that's sort of just the sad reality.

You can create value with breakthrough innovation, incremental refinement, or complex coordination. Great companies often do two of these. The very best companies do all three.

You have to let your team get all the credit for all the good stuff that happens, and you take responsibility for the bad stuff.

If someone is difficult to talk to, if someone cannot communicate clearly, it's a real problem in terms of their likelihood to work out.

A small communication breakdown is enough for everyone to be working on slightly different things. And then you loose focus.

You have to find a small market in which you can get a monopoly and then quickly expand.