I think one of the biggest problems I faced was honestly managing personal expectations and self-care. While finding PMF etc are hugely important, they're also

I think one of the biggest problems I faced was honestly managing personal expectations and self-care. While finding PMF etc are hugely important, they're also difficult to do if you're not in the right mindset - meaning not only that you're thinking clearly and intelligently but also creatively. Managing time for exercise, friends and general relaxation proved more difficult for me during crazy startup times than any other job I've had.