Maybe you have a subconscious fear of failure, that compels you to switch to a different project before you can be put to the test? Does it help to anticipate that you will fail in execution, multiple times, but persist until you finish?
Have you tried experimenting with the other extreme? Rank your projects. Pick the top project. Forget the others exist until that one is complete. It’s extreme, but if you try it once, experience completion, and change the way you think and feel about it, maybe you can then find a better middle ground?
Maybe you have a subconscious fear of failure, that compels you to switch to a different project before you can be put to the test? Does it help to anticipate that you will fail in execution, multiple times, but persist until you finish?
Have you tried experimenting with the other extreme? Rank your projects. Pick the top project. Forget the others exist until that one is complete. It’s extreme, but if you try it once, experience completion, and change the way you think and feel about it, maybe you can then find a better middle ground?