Don't underestimate yourself. You are capable of more than you can ever imagine.
Once you have dared to dream, I believe you MUST pursue that dream. If you do not pursue your dreams they will consume you; the knowledge that you had a dream but did not pursue it is killing knowledge. Consider it absolutely necessary to go after your dreams.
Forgive yourself for your faults and your mistakes and move on.
Fear does not have any special power unless you empower it by submitting to it.
We have to live life with a sense of urgency so not a minute is wasted.
It takes someone with a vision of the possibilities to attain new levels of experience. Someone with the courage to live his dreams.