The biggest mistake people make when thinking they are going to be successful in a "Side Project/Additional Income" opportunity is thinking it is all about the product or service
Now don't get me wrong, having a good product or service is extremely important, you have to be able to believe in what you are promoting. However that is NO indication of your success.
Your success is going to be dependant of how effectively you are mentored and how simple and duplicatable your processes are.
Leaders develop other leaders and leadership is a development of character rather than the size of your cheque!