How do you cope with the fact that no matter how you structure your time, you will always fail to achieve your goals, as they will always be overambitious?
I created a perfect routine, I measured my time using Clockify and Toggl for 2 years. I do productive stuff 17h a day (most of it being studying), yet the number of interesting things to do is infinite. The more you know, the better you realize just how little you know about many things. You get interested in a lot of stuff, but never have time to study them. As you eventually reach some of that stuff, you realize the mistakes you have committed because you haven't applied the knowledge you have now gained from these things.

You know that you will fail in the future, simply because you are not from the future...