a think I finally found a way to study that works for me. It is less an issue of commitment, but more an issue of organization. I started naming the file after what the study was about and not for example who I am studying from. That way I keep in mind what I am doing the study for. Also I save all the studies I do on that topic in one month in the same file. So after a month I can see how many composition studies I did in April and how many gesture studies and so on. It feels right this way and is fun (at least for me)
A quick note on gestures. I used to hate them, because they felt so difficult und unsatisfying. I never knew why I did them, because I felt like I didn't learn anything from them. But since I started walking around outside with my sketchbook and sketching people while I was walking (sometimes behind them very slowly (people don't get suspicious if you have a baby with you)), I started to like them more and more. I guess the whole thing turned when I started to do really simplified gestures of people with the least lines possible. PS is actually a great tool for this, since it lets you change brush diameter instantly. So in the first of these I brushed in a couple of guidelines with big broad strokes and after that got clearer and more detailed. But all the time the first big strokes tell the whole story. The smaller strokes help to tell more about the volumes and connections, but the big ones are the key to the pose. And also I found my perfect time for these. It's 2 min. It is the perfect timespan to check out the whole figure, do my big strokes and then add some details where I want them. It is pretty satisfying to work that way.
That's it for now. And to all the German's reading this at 1st of May, enjoy your day off! :D