Depends on how good you are at organizing and how much you have to work to pay for your life. I have to work 10-20h a week, which is rather easy to distribute

Depends on how good you are at organizing and how much you have to work to pay for your life. I have to work 10-20h a week, which is rather easy to distribute around the week. But some people have to work 40-100h a week, which can get problematic if they don't plan them early on.