Realistically the only way I was able to do it was being laid off which forced me to jump in. I had a savings and a wife who believed in me (the savings has helped her belief hah) Family is a no-compromise #1 priority for me under any and all circumstances. I don’t think it is possible for most people to do all three. At Berkeley we had a saying “you can have 2/3 of either: good grades, a social life, and sleep”. This feels like a similar 2/3. Unless your job is easy enough where you can get it done in 1-2 hours and spend the rest on your startup.