"Whatever you are by nature, keep to it; never desert your line of talent. Be what nature intended you for and you will succeed" 
-Sydney Smith

"The difference between perseverance and obstinacy is that one comes from a strong will, and the other from a strong won't"
 -Henry Ward Beecher

"You learn that, whatever you are doing in life, obstacles don't matter very much. Pain or other circumstances can be there, but if you want to do a job bad enough, you'll find a way to get it done".-Jack Youngblood