Also it very much depends on the full-time job itself. I mean, some people work strict hours, like they cannot afford work less. My conditions are quite mild,

Also it very much depends on the full-time job itself. I mean, some people work strict hours, like they cannot afford work less. My conditions are quite mild, meaning that the most important is the result, not hours. The only problem I have ALL the time is finding right place to work. I don't work on my side project while sitting in office, of course. Cafes might be noisy, expensive etc :)