Some of them have had good ideas, but they either dismissed them as not valid or they decided they didn't know how to go about implementing them, so they gave up. That's the difference between the successful person and the person who just trudges along. The successful person believes in himself enough to find a way to attain his goals. He doesn't get discouraged. When something doesn't go his way, he finds another way.
Life is all about attitude.
You must be able to visualize yourself as a success before you can be a success. The attitude you present is what others see - and it shows in your ads, your articles, your voice, and your website. If you are down on yourself, so will others be down on you and your offer. It means that they were so sure of themselves that people just couldn't turn them down. Most people buy from someone they like.