A poster I had in my classroom to promote self-discipline:
“I would rather try and fail than not try and succeed.”
If you instill the PERCEPTION THAT SUCCESS IS ATTAINABLE, people will try. If they do not believe success is possible, regardless of how easy the task or how smart the person, the goal will not be attained.
One of the most enduring comments people say about others who have influenced their lives is, “He/she believed in me.”