I've definitely felt this way before, as I'm sure most devs have. Numerous projects I've tinkered with in the past didn't end up becoming anything because I got too burnt out, mainly due to feeling intimidated by the tools and/or not knowing where I wanted to go with them. My first game made things easier on me by being based on a story I made up as a kid. New ideas can spring from all sorts of places. Don't feel too bad if some get tossed aside. Doesn't mean they can't be returned to. My story was something I gave up on around a decade ago before deciding to come back to it and make it as a game all these years later :)
Whatever the case, take everything you make as a learning experience, finished or unfinished! It's all valuable.