Chains of habit are too light to be felt until they are too heavy to be broken.

Warren Buffett

I have always been one to encourage perseverance.

Christina Aguilera

You lose nothing when fighting for a cause... In my mind the losers are those who don't have a cause they care about.

Muhammad Ali

When something is important enough, you do it even if the odds are not in your favor.

Elon Musk

Never retreat. Never explain. Get it done and let them howl.

Benjamin Jowett

You are never too old to set a new goal or dream a new dream.

C. S. Lewis