This question might seem a bit vague but it is hard to formulate properly. I will try as best as I can. So here goes...
For many years I have been trying to create games but I haven't managed to finish even a single one. The main reason, among others, was that the game creation process lacked focus. There never was a concrete vision of what I was trying to create.
Now I realize that I would usually want to create a game that was similar to some other that I recently played and liked. It seems like there are many games I would like to make but there is none that I would see as THE game I want to make (or one of THE games).
I really want to create something that I (and hopefully, others too) like and can be proud of. But I'm having a hard time discovering what it is. It doesn't have to be big, graphically awesome or anything like that. It should simply be something I really enjoy and am motivated to create.
So, has anyone else here had the same or similar problem? Have you found a way to overcome it? Have you discovered "YOUR" game?
If so, what was different about it from other games you tried creating?
EDIT:
Thanks for all your answers. Just want to clarify some things a bit...
Before asking this question I already read through various older questions about things like prototyping, having deadlines, to-do lists, participating in competitions with short deadlines, etc.
What I wanted to know more by asking this question was not how to create a game in general but how to discover a project that feels like what you really want to do.
For example, I play racing games very rarely, but sometimes I might play some game that is quite fun for a while and get an idea about creating some racing game of my own. But that idea won't stay for long and I will soon get bored with it because in general I am not the kind of guy who is really "into" racing games.
It would be nice if someone here could tell how they discovered what their game was. And I would appreciate if you could tell your story with more details, especially about the things that made the difference between "it would be nice to make this game for myself" and "I want to make this game really badly".