Dale Harbison Carnegie was an American writer and lecturer and the developer of famous courses in self-improvement, salesmanship, corporate training, public speaking, and interpersonal skills. Born into poverty on a farm in Missouri, he was the author of How to Win Friends and Influence People, a massive bestseller that remains popular today. He also wrote How to Stop Worrying and Start Living, Lincoln the Unknown, and several other books... (wikipedia)
One of the most tragic things I know about human nature is that all of us tend to put off living. We are all dreaming of some magical rose garden over the horizon instead of enjoying the roses that are blooming outside our windows today.
Most of the important things in the world have been accomplished by people who have kept on trying when there seemed to be no hope at all.
Inaction breeds doubt and fear. Action breeds confidence and courage. If you want to conquer fear, do not sit home and think about it. Go out and get busy.
Don't be afraid to give your best to what seemingly are small jobs. Every time you conquer one it makes you that much stronger. If you do the little jobs well, the big ones will tend to take care of themselves.
The successful man will profit from his mistakes and try again in a different way.
Flaming enthusiasm, backed up by horse sense and persistence, is the quality that most frequently makes for success.
You can make more friends in two months by becoming interested in other people than you can in two years by trying to get other people interested in you.
The person who goes farthest is generally the one who is willing to do and dare. The sure-thing boat never gets far from shore.
The only way to get the best of an argument is to avoid it.
Do the thing you fear to do and keep on doing it... that is the quickest and surest way ever yet discovered to conquer fear.