Firing people is one of the worst parts of running a company. Actually in my own experience, I think it is the worst.

If someone is getting every decision wrong, that's when you need to act, and at that point it'll be painfully aware to everyone.

Someday, you need to build a business that's difficult to replicate. This is an important part of a good idea.

If you pivot, do it fully and with conviction. The worst thing is to try to do a bit of the old and the new-it's hard to kill your babies.

One thing that often disrupts momentum and really shouldn't is competitors.

Most good founders that I know at any given time have a set of small overarching goals for the company that everybody in the company knows.

More important than starting any startup, is getting to know a lot of potential co-founders.