Follow the steps. Any worthwhile goal or ideal you are trying to reach all has steps associated with them. Many times there are longer steps than other steps. However, it really does take that persistence and commitment to take each step one by one.
Trust. The main thing that keeps people from not reaching their goals is that they are no longer trusting their own process. The trust comes in as a form of belief in yourself and you accomplishing your goals in a manner that may take longer than you expect, but this trust in taking it all one step at a time is a good mental habit to keep around.
Don't beat yourself up. Understand that process is not always going to go your way. There will be challenges and mistakes that you make along the way. But don't beat yourself up for these. Understand that the process of making mistakes is all part of the journey. Have faith in what you are doing, with the idea that you won't beat yourself up if you make mistakes. It's all a learning process, that will result in you becoming a better person for it.