A character overcoming a flaw with a strength

According to H. Thomas Milhorn in Writing Genre Fiction, a protagonist should have three attributes:

1) a need or want which translates into a story goal the character is willing to fight for (such as to gain possession of something,to get relief from something, to prevent something, or to get revenge for something
2) a strong point (such as courage, wisdom, persistence, or kindness) which confers on the character potential for triumph; and
3) a character flaw (such as alcoholism, prejudice, greed, gullibility, fear of heights, or fear of authority) that unless overcome may lead to the character's downfall.

Write a story in which your character has a need or want that develops into an active goal requiring them to overcome a major flaw using a major strong point.