Do not fear mistakes
If you're not failing every now and again, it's a sign you're not doing anything very innovative.
I think that failure by your own standards is certainly a form of success.
FAILURE, CERTAINLY A FORM OF SUCCESS
Develop success from failures. Discouragement and failure are two of the surest stepping stones to success.
Don't be afraid of missing opportunities. Behind every failure is an opportunity somebody wishes they had missed.
Even when you have doubts, take that step. Take chances. Mistakes are never a failure - they can be turned into wisdom.
FAILURE, MISTAKES ARE NEVER A FAILURE