sorry mp, discipline is required.

You need to finish your projects.
I want you to deeply internalize the benefits of finishing so much that it seems stupid not to push yourself through a project and see it through the completion.
Now as a disclaimer not every project needs to be or should be finished - sometimes circumstances change and there's no reason to keep working on something

Mini-projects are a good way to build momentum over long, continous project until you build that discipline.

Starting a project is easy because it’s low cost, high reward/dopamine.

Keeping many unfinished projects is high cost of your mental energy.

Being multipassionate takes focus, courage.

It’s not just being unfocused

Discipline is required to steward your multipassionate nature well. That said, discipline DOES look drastically different than traditional discipline.