One example of a good retirement sentiment is "Life begins at retirement." Another example is "Living each day as if it were your last doesn't mean your last day of retirement on a remote island. It means to live fully, authentically and spontaneously with nothing being held back," by Jack Canfield.
Jack Canfield is an American author and motivational speaker who also leads workshops and corporate training events. He is one of the authors of the popular "Chicken Soup for the Soul" series and "The Success Principles: How to Get From Where you are to Where You Want to Be." His career began in 1967 when he became a high school teacher in Chicago, Illinois. Currently, he is the founder and chief executive officer for the Canfield Training Group, which is based out of Santa Barbara, California. Other well-known works of his include "The Aladdin Factor" and "The Power of Focus."
Retirement wishes can be for a friend or family member as well as co-worker who is leaving. One example of a retirement wish geared toward a co-worker is "I hope you have a wonderful retirement! You will be missed, but never forgotten. You've done so much for all of us."