A closet full of half-finished projects quietly teaches your brain that quitting is normal.

Every abandoned attempt leaves a small piece of evidence about who you are, and the pile eventually becomes a belief. Nothing is stated outright, but starting gets easier and finishing gets harder, because the pattern has been rehearsed many more times than the alternative. The problem is not the individual project. It is what the collection is teaching.

Finish one thing that is close, even badly, and let the completion register. Then start fewer things than you want to. Say out loud what done looks like before you begin the next one.