I've tried lots of things but haven't finished any.
jeromec: Yes, it seems to me you are doing two things wrong. First, you are not considering carefully enough everything an endeavor will require for success - and if you can and will provide what is required. That leads to the second, which is you jump in fairly hastily, then fail to deliver what is required for success, if success is even possible at the time. Note: I've been guilty of all this myself, and have worked to improve.