My suggestion for where you're at, is to start smaller projects. Completing them feels really great. You can then open source them if you care to, or shut them down if they don't go any further.
Take one of your ideas, scale it down to nothing more than its essence, and build the simplest form of it you can imagine to get it to work, so people can use it. Then add on to it if or when you care to.
Whatever you do, build within your means to complete; as otherwise, you'll never actually get anywhere. As you launch things successfully, your ability to build to a larger vision will likely expand.
Take one of your ideas, scale it down to nothing more than its essence, and build the simplest form of it you can imagine to get it to work, so people can use it. Then add on to it if or when you care to.
Whatever you do, build within your means to complete; as otherwise, you'll never actually get anywhere. As you launch things successfully, your ability to build to a larger vision will likely expand.