>Maybe it was the long bicycle rides where I can peacefully wonder about what I want to focus on today, but I'm not sure.

Yeah, I have recently picked up the habit of walking daily for 30 - 60 minutes, but at the end of the day. It's quite refreshing and helpful, not to mention the physical exercise aspect. It feels good to think on the day's decisions / what happened, and think if what I am doing is what I really want or not.

>[...] by now I've seen firsthand how little practical relevance most school and university lectures had.

Yeah, I have heard this a lot. My problem lies in GPAs being used as filters, both for job applications and scholarships. It just hurts to think of the possibility that I could be passed over, not because of my actual skillset or level, but due to exam performance.