A great quote for me is that sales is just a transfere of entheusiasm.
That means no matter what you are selling, if you don't understand it, or if you don't believe in your product, you can force it on others as much as you like, but you will never have a great conversion rate.
If you feel you are selling something that is worth more to someone the the price of purchasing it, then you are adding value to that persons life, and they would be crazy not to get involved. Entheusiasm is infectious, and reduces the effort required to make a sale on a huge scale. If you are already sold yourself, you won't be making a hard sale. People will already want what you have. If they don't want it, don't waste your time and energy on negative feedback. Move on. Sure, some might need to be convinced, but that will be easy because if you're already convinced, that transfere of entheusiasm in you is tireless. You do need a good product and a great compensation plan to work with, so chose carefully. If you believe something has value in its purchase for you, it is very likely that many others will also feel the same way. The key word here is value. Is the benefit of having something, greater than the cost of aquiring it? Is the profit in selling something, greater than the benefit of keeping it?
Before making any decision in life, first ask yourself: Will this move me in the direction I want to go? Will this diminish me in any way? Will this diminish others in any way? Will anyone get hurt? If the answer to all these questions is no, then don't hesitate. It is good thing. Sold.