To follow without halt, one aim; there is the secret of success. And success? What is it? I do not find it in the applause of the theater; it lies rather in the satisfaction of accomplishment.

All my growth and development led me to believe that if you really do the right thing, and if you play by the rules, and if you've got good enough, solid judgment and common sense, that you're going to be able to do whatever you want to do with your life.

The secret of success is constancy to purpose.

Yesterday I dared to struggle. Today I dare to win.

 Always bear in mind that your own resolution to succeed is more important than any other one thing.

Try not to become a man of success but rather try to become a man of value.

Success is not the key to happiness. Happiness is the key to success. If you love what you are doing, you will be successful.

If I have been of service, if I have glimpsed more of the nature and essence of ultimate good, if I am inspired to reach wider horizons of thought and action, if I am at peace with myself, it has been a successful day.

He has achieved success who has lived well, laughed often and loved much; who has gained the respect of intelligent men and the love of little children; who has filled his niche and accomplished his task; who has left the world better than he found it, whether by an improved poppy, a perfect poem, or a rescued soul; who has never lacked appreciation of earth's beauty or failed to express it; who has always looked for the best in others and given them the best he had; whose life was an inspiration; whose memory a benediction.

To laugh often and much;
To win the respect of intelligent people and the affection of children;
To earn the appreciation of honest critics and endure the betrayal of false friends;
To appreciate beauty, to find the best in others;
To leave the world a bit better, whether by a healthy child, a garden patch or a redeemed social condition;
To know even one life has breathed easier because you have lived.
This is to have succeeded.

Often attributed to Ralph Waldo Emerson, it is an adaptation of a poem published in 1905 by Bessie Stanley. No version of it has been found in Emerson's writings. 

How many cares one loses when one decides not to be something but to be someone.

Love the moment. Flowers grow out of dark moments. Therefore, each moment is vital. It affects the whole. Life is a succession of such moments and to live each, is to succeed.

Life is a succession of moments. To live each one is to succeed.

Small opportunities are often the beginning of great enterprises.