Learning

We learn more by looking for the answer to a question and not finding it than we do from learning the answer itself.

Lloyd Alexander 

Time

Don't wait. The time will never be just right.

Napoleon Hill

Perseverance

I think a hero is an ordinary individual who finds strength to perservere and endure in spite of overwhelming obstacles. 

Christopher Reeve

Opportunities

We are all faced with a series of great opportunities brilliantly disguised as impossible situations. 

Charles Swindoll

Be thankful

Be thankful for what you have; you'll end up having more. If you concentrate on what you don't have, you will never, ever have enough.

Oprah Winfrey

Just another way of saying "appreciate what you have while you have it" otherwise you might regret once you've lost it. And obviously there is nothing much you can do afterwards. Start being grateful for the small things. Use a piece of paper and make a list of what you have. Look at it daily and soon enough you will need a notepad. 

Obstacles

Obstacles are those frightful things you see when you take your eyes off your goal. 

Henry Ford

Impossible

Impossible is just a big word thrown around by small men who find it easier to live in the world they've been given than to explore the power they have to change it.
Muhammad Ali

Minds

Great minds discuss ideas. Average minds discuss events. Small minds discuss people. 

Eleanor Roosevelt

Quality

The quality of a person's life is in direct proportion to their commitment to excellence, regardless of their chosen field of endeavor. 

Vince Lombardi

Opposition

Great minds have always encountered violent opposition from mediocre minds. 

Albert Einstein

Dreaming

The only thing that stands between you and your dream is the will to try and the belief that it is actually possible.

Joel Brown