Growth solves (nearly) all problems

The most common post YC failure case for the companies we fund, is they're incredibly focussed during YC on their company... and after they start doing a lot of other things. They advise companies, they go to conferences, whatever.

In general though, if you look at the track record of pivots, they don't become big companies.

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.

Stay focused and don't try to do too many things at once. Care about execution quality.

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

The thing that kills startups at some level, is the founders giving up.