This document discusses when not to do startups. It suggests not pursuing a startup if you want a traditional 9-5 job, are afraid of change, or don't like last minute travel. It also advises against starting a startup if your idea is too complicated, you want to work alone and hate people, want to be a superstar without putting in the work, see failure as something to hide, or don't have a support system. The document emphasizes that startups require a different mindset than traditional jobs.