1) Split your work, so that you don't have to be in the same room all day. 2) Do spend time with your co-founder which has nothing to do with your startup. Wat

1) Split your work, so that you don't have to be in the same room all day. 2) Do spend time with your co-founder which has nothing to do with your startup. Watch movies, relax, have fun. 3) Have other friends who are totally different.