I've read that when you are trying to sell someone something, if you can get them to answer 3 questions in a row with a "yes", then you will probably be able to complete the sale. The interesting thing is that the questions don't even have to have anything to do with what you are trying to sell!
So here we go...
1. Do you want to be successful?
2. Do you want to enjoy life?
3. Do you like apple pie? (Who doesn't?)