On the "juggling multiple unfinished projects" I outgrew this successfully. What it took was to accept accountability. I have a trusted mate that I talk with, and update him on where my current project is at, so I can't just let it slide. We both understand and agree that starting something new can't happen unless we've discussed the previous thing: dropping it is fine, but needing to give a reason first is the difference. This has prevented me from (1/n) assing n things many times, and persisting.