By stretching yourself beyond ...

By stretching yourself beyond your perceived level of confidence you accelerate your development of competence.
By stretching yourself beyond your perceived level of confidence you accelerate your development of competence.
 Michael J. Gelb

More phrases

Effort only fully releases its reward after a person refuses to quit.
Never complain and never explain.
A good plan violently executed now is better than a perfect plan executed next week.
 George S. Patton
Problems are not stop signs, they are guidelines.
 Robert Schuller
Never give up, for that is just the place and time that the tide will turn.
 Harriet Beecher Stowe

Quotes from the same author

You can increase your problem-solving skills by honing your question-asking ability.
 Michael J. Gelb
As you embrace the process-oriented approach described in The Practicing Mind, you'll achieve better results in any endeavor.
 Michael J. Gelb