This resonates with me a little bit. But I have another problem. When I start working on another, fun, side project (to make a more "productive" procrastination

This resonates with me a little bit. But I have another problem. When I start working on another, fun, side project (to make a more "productive" procrastination) I start feeling anxiety because I can't fully trick my brain. I still know I should be doing this other X (main) thing. How do you overcome that?