Misha, I generally work on one or two songs until they are finished. 99% of the time when they are finished I will no longer work on them. However on occasions someone will make a suggestion that I think would improve the song so I change it.

Every once in a while I will have an "I love me day" where I will go back and play some of my old songs. Generally songs that I did 2 or more years ago are not as good as today's songs because of either better equipment/sounds, better techniques or both.

IMHO if you only keep your songs in the "sketch" stage you will become very good at that technique but nothing else. Take a "sketch" stage song and finish it via mixing. Post it and ask for critiques. The friendly folks here will help.

IMHO the only way to get better at anything is practice, practice and practice.

I just posted a selfie and all of the responses were get well soon!

64 bit Win 10 Pro, the latest BiaB/RB, Roland Octa-Capture audio interface, a ton of software/hardware