[fuckemem]

Here is an angle on this:

The goal is to stick to something until completion.

Phsychologically this is easier if you are enjoying it.

So choose a project and a tech stack you can really get into.

Scratch your own itch so that even if no one else uses it or buys it are least you can.

Look at the non-financial upsides, so that if you make zero or little money you can still feel proud: For example - learning new skills that might help you get a raise, learning marketing so that your next project is more likely to be successful, etc.

A word of warning - once you have spent some time on a side project the shine will wear off and it will feel like a job - and you have to find ways to keep yourself motivated when you could literally just go an watch TV instead on your time off.