[gurtgurt]

This is definitely a common issue everyone struggles with. I've noticed a lot of it stems from constantly changing my mind and self doubt during the dev process (like you mentioned, you start off building a roguelike, switch over to a solitar card game, switch over to a isomorphic strategy game).

Something that helped me a lot is first spending more time than I think I need figuring out what I want to build on a very high and broad level, and not just diving into coding. Once I figure out what to build I need to have the discipline not to change what I have decided to build. Some implementation details might change or some game mechanics might be tweaked, but on a high level (am I building a roguelike or solitar type) can't be changed once I start.