I am a single founder and running Indefero http://www.indefero.net (code hosting, project managemnt) I consider it a success. Maybe not a million user success, but at my level a success as together with my consulting business, I pay myself a good salary since 2008 and enjoy what I am doing.
The real question is: what would be a success for you? If you want to do something, when would be the point where you could say: Success! If you can really answer this question, the path to reach this point is not that complicated, but the question is hard to answer and you will change your mind quite often (at least, this was/is my case).
The real question is: what would be a success for you? If you want to do something, when would be the point where you could say: Success! If you can really answer this question, the path to reach this point is not that complicated, but the question is hard to answer and you will change your mind quite often (at least, this was/is my case).