Harvey Mackay: Contributions to society are not limited by age

October is one of my favorite months, perhaps because that's when I get to blow out my birthday ­candles and celebrate another successful year. Who doesn't love birthdays?

My age is irrelevant; in fact, I subscribe to the iconic comedian Jack Benny's philosophy. He turned 39 in 1933, and remained that age until his death in 1974. I've been 39 for a few years now, and it just keeps getting better.

As an advocate for lifelong learning, I am directing the advice in this column not only to those who have years of job experience, but also to those who are just getting started in the work world, and everyone in between.

Here's what I want everyone to repeat after me: Your age does not dictate your ­ability to accomplish. Reaching your retirement years does not mean you are finished contributing to society.

Let me give you a few examples of people who refused to "act their age":

Admiral Hyman G. Rickover, the designer of the first nuclear submarine, was still a consultant to the Navy at 82. American artists Grandma Moses and Georgia O'Keeffe both continued to paint well past the age of 90. Russian artist Marc Chagall was designing stained glass windows for churches at 90.

Frank Lloyd Wright, considered one of the greatest modern American architects, created an entirely original concept of architecture when he was well past the age of 90. Wright was fond of saying: "Youth is a quality, and if you have it, you never lose it."

Robert Frost, nearly 87, read his poem, "The Gift Outright" at the inauguration of President John F. Kennedy in 1961.

Perhaps you detected a theme here — many of these highly accomplished people were creative types who were not bound by the traditional expectations of retirement. I wonder if there is a correlation.

Regardless of your vocation, I strongly encourage you to never stop using your talents and abilities. Even if you are looking forward to leaving the workforce at some point, you have marvelous opportunities to leave your mark on the world.

Most of us are familiar with the myth of the phoenix, a bird of great beauty. There was only one, and it lived for hundreds of years. When it sensed that it was about to die, it built its own funeral pyre, lighted it by fanning its wings, then flew into the fire and arose young again from the ashes.

The phoenix came to be associated with the sun god, who disappeared as an old man each night and appeared as a child the following morning. For centuries, the phoenix has become a symbol of rebirth and renewal.

Mackay's Moral: No matter how many birthdays I've had, I haven't hit my peak yet.