Affiliate marketing is one of the best ways to make money through the internet. If you want to succeed like many have before you really need to put your focus on your business.
In the affiliate business you need to be serious enough to work hard for the money you want to make. Do this by helping others. Nobody would want to do business through somebody who they do not trust.
You need to help people out. Build affiliates that are not targeted to selling but actually targeted towards helping others. This is how you will succeed in this industry. Use it to your advantage.