People who succeed have momentum. The more they succeed, the more they want to succeed, and the more they find a way to succeed. Similarly, when someone is failing, the tendency is to get on a downward spiral that can even become a self-fulfilling prophecy.
When we see a successful person we often times only see their stunning accomplishments. While we are in awe about what they have achieved we oftentimes forget that they as well started small. There was a time where the successful people took one tiny step after another towards the accomplishment of their goal. Just like a tiny seed these people kept on pursuing their dreams until they had a grown into a large tree.