[reinkaos]

I would suppose this is a very common struggle among IT professionals. A few things that have helped me, some of them already mentioned in this thread:

- simply don't do it; prioritize more important ideas.

- start smaller - some ideas are just too ambitious, try to come up with the smallest end product that is still useful.

- don't talk about it - just by talking about what you are planning to build gets you a small dopamine release, discouraging you from finishing the project.

- scratch your own itch - create something that will help solving a problem you face frequently.

- get other people involved - invite other people to collaborate building or just using it so you have people to hold you accountable.