This is one of my favorite movie speeches. From everything I've tried to achieve in this world, I've realized that life is tough. Anytime you ever want to achieve something, people around you and the world in general, will knock you back down. The only way to succeed is to keep getting up, keep going at it, never give up, never stop until you've reached your goals.
I'll let Rocky tell you in his own words :)
HD - Rocky Balboa (2006) - inspirational speech