During the last 34 years as an entrepreneur, I have often written notes to myself. Here are several whose effectiveness have remained for years.

• “Have no more confidence in the judgment than you do in the judge.” If you do not trust the source, do not place much importance on the idea.

• “The happier you are with simpler things, the simpler it is to be happy.” Sunsets are free. Don’t complicate happiness. It is an internal, not external, process.

• “Remember to find happiness in the little things in life.” I keep a photo of a thimble full of tiny flowers in my office.

• “Quit taking it personally.” The traffic light didn’t turn red to make you late or mad. It just turned red like it does every 30 seconds.

• “Enthusiasm is gratitude for life in action.” Act alive. Be energetic. Have reasons to enjoy today and look forward to tomorrow.

• “If in doubt, smile. That will keep them wondering while you figure out what to do.” Think, then act or speak.

• “What you do speaks so loudly, I often can’t hear what you say.” This is my personalized version of actions speak louder than words. Align what you think, feel, say and do.

• “If you have trouble remembering how to have fun and play, watch a child. If you are still not sure, join them.” There is joy in simplicity and innocence.

• “Don’t play checkers in the chess game of life.” Look at all the options and angles, not just the few easy or convenient ones.

• “Find solutions for your clients and not clients for your solutions.” This is the fastest and least expensive route to success.

• “If you always travel in your comfort zone, you’ll probably never arrive at success.” Learning and growing as a person involves risks.

• “Develop eyes for opportunity. Certainly consider alternatives, but dwell on the rewards of success.” Look everywhere for ideas. Don’t limit your options.

• “Be a contrarian; Sprint the curves and walk the straight-aways.” If you act like everyone else, you will be like everyone else. Dare to be different.

• “Faith is confident action taken in the face of adversity.” If you still believe in your process and plan, persist.

• “It was back about the middle of June. The stars were drained to fill the moon. The lakes at night were covered with glass. The wind was invited, but said, ‘I’ll pass.'” Use both sides of your brain. Seek balance.

Tim O’Brien writes continuing-education courses and presents seminars on stress management.