[chimpinee]

No no no. This is unkind.

'Finish everything.' Everything? No way. Abandon stuff which is unfruitful or superseded or published. Just don't abandon stuff lightly: have a good explanation why (which is not a personal excuse).

Make progress with things that have meaning to you. Go slowly and keep returning to them. This is the fastest way. Don't force yourself to work when you're sick or bored or have other commitments. Your mind would not be engaged anyway.

Two more points. Valuable works are never truly finished. They are abandoned. Things can always be improved!

Also, don't worry about being competitive. Life is not a competition. There's infinite room for everyone to form a niche. Read up on comparative advantage.

Competition engenders a false sense of lack and zero-sumness which causes much harm to the world. It fosters greed.