I have been working on one startup or another since I was in my teens. Not one has been super-successful, but that's ok because I expect that as an entrepreneur. I've learned a lot along the way.<p>What I can't seem to do, however, is stay focused on just one idea. I am a developer and an ok designer. I'm good at what I do (in general, as a developer) and am constantly coming up with new ideas. I have a few that I really like, and I've spent serious time on a few of them, but I find myself becoming bored of each idea before too long, and then I am off thinking about or looking into some other new and exciting idea.<p>How do you stay focused on just one idea? It feels like any decent idea could be profitable enough to help me leave my job with enough persistence, but I can't seem to stay focused or excited about just one idea. What I want is independence and to build something that other people really love to use. I'm fine with a lifestyle business instead of a home-run, if that means I can work for myself. I'm now in my early 30's, and it feels like time is slipping away. I work on my projects in the evenings, generally around 20 hours per week.<p>I think of myself as a single founder, not because I don't want to or won't work with someone else, but because I haven't yet found someone who is as dedicated to actually building something, anything, as I am. I've teamed up with people a few times, but they all fizzle out (they underestimated the time involved, got married, had a baby, etc). I'm open to really finding someone else to work with, but I'm not sure that will really fix the problem.<p>Does anyone else have this problem? If so, how do you stay focused on just one idea when its no longer "fun" (for me that would be things like marketing, building the back-end, etc)? What can/should I do?