Meaning of the word "a man is as old as he feels himself to be" in English

What does "a man is as old as he feels himself to be" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

a man is as old as he feels himself to be

US /ə mæn ɪz æz oʊld æz hi filz hɪmˈsɛlf tu bi/
UK /ə mæn ɪz æz əʊld æz hiː fiːlz hɪmˈsɛlf tuː biː/
"a man is as old as he feels himself to be" picture

Idiom

a person's age is not as important as their physical and mental state or how they behave

Example:
He started learning to surf at seventy, proving that a man is as old as he feels himself to be.
Don't let your age stop you from traveling; remember, a man is as old as he feels himself to be.