The most important thing in life is not simply to capitalize on your gains. Any fool can do that. The important thing is to profit from your losses. That requires intelligence, and makes the difference between a man of sense and a fool.
Quotations by:
Carnegie, Dale
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.
Remember, today is the tomorrow you worried about yesterday.
Dale Carnegie (1888-1955) American writer, lecturer
How to Stop Worrying and Start Living, Part 10 “How I Conquered Worry” (1948)
(Source)
Final note by Carnegie on the story "Six Major troubles Hit Me All At Once" by C. I. Blackwood of Oklahoma City.
The phrase was a "rule" Carnegie taught in his adult courses, and he collected many reports from students about how the various rules taught in the course actually worked in their lives. Thus the "remember" above and how the phrase is also mentioned, quoted in the past tense, in the story "I Now Look for the Green Light," by Joseph M. Cotter of Chicago: "I was told over and over that 'today was the tomorrow I had worried about yesterday.'"
1. Don’t, don’t nag.
2. Don’t try to make your partner over.
3. Don’t criticize.
4. Give honest appreciation.
5. Pay little attentions.
6. Be courteous.
7. Read a good book on the sexual side of marriage.
In a Nutshell: Six Ways to Make People Like You —
Principle 1: Become genuinely interested in other people
Principle 2: Smile.
Principle 3: Remember that a person’s name is to that person the sweetest and most important sound in any language.
Principle 4: Be a good listener. Encourage others to talk about themselves.
Principle 5: Talk in terms of the other person’s interest.
Principle 6: Make the other person feel important — and do it sincerely.
Any fool can criticize, condemn, and complain — and most fools do.
Dale Carnegie (1888-1955) American writer, lecturer
How to Win Friends and Influence People, Part 1, ch. 1 (1936)
(Source)
Also attributed to Ben Franklin; this may be due to the preceding paragraph quoting Franklin.
You have it easily in your power to increase the sum total of this world’s happiness now. How? By giving a few words of sincere appreciation to someone who is lonely or discouraged. Perhaps you will forget tomorrow the kind words you say today, but the recipient may cherish them over a lifetime.