Not staying focused on one idea. If you try to work on more than one idea, you spread yourself too thin, and all the ideas suffer in quality and execution. A

Not staying focused on one idea. If you try to work on more than one idea, you spread yourself too thin, and all the ideas suffer in quality and execution. Also, feature creep, focus only on the minimal features needed to launch. Decide on additional features after you have users and they start to ask for things and patterns start to form.