I have some sort of a long-term to-do list, a list where I state my goals, intended projects, things to learn, etc. Sometimes I decide that I don't want to do

I have some sort of a long-term to-do list, a list where I state my goals, intended projects, things to learn, etc. Sometimes I decide that I don't want to do certain things anymore, maybe because I lost interest or something more worthwhile pops up, so I don't delete the entry from my long-term to-do list. Instead I strike it out and write a very short comment behind it. Doing it that way seems to keep my head clear and helps me later to stay focused. tl;dr: I don't have a not-to-do list but I don't delete thing I decide not to do from my to-do list, instead I cross it out. Keeps my head clear, and helps me to document the reasoning. I would recommend it to others.