On two occasions yesterday, this saying surfaced in my life: "好汉不提当年勇" (hǎo hàn bù tí dāng nián yǒng): a hero doesn't boast about his past glories.
It's not a good practice for anyone to dwell on his or her past achievements, especially for retirees.
First of all, bragging never digests well in people's stomachs. Remaining humble about one's previous successes is always a strength. No matter how great you were in the past, there's always room for improvement and for continuing to strive for a better you.
Second, self-bragging always implies telling people that we have something in our past that is better than you, that we need to bring it up to impress you. This is disrespectful in conversations and interactions. And remember true strength lies in humility, not in bragging.
Third, honestly, nobody is truly interested in hearing how great you were in the past. Your past laurels are not relevant any more if you stop being that glorious. Psychologists might want to know your past in order to understand your present. I think of Cervantes' novel Don Quixote. There is a pathetic sense of out of touch with the realities.
Fourth, let bygones be bygones. Eye on the present and future. Focus on what you can contribute meaningfully today. Psychologically and mentally, I believe a forward-looking attitude is more healthy than backward-looking one.
Finally, an old hero not mentioning past glories is a sign of maturity, humility, respect, and forward-thinking, with the emphasis on continuous growth and adaptation.
For people of all ages, it's essential to move past whatever past we have endured, knowing that our worth is not solely defined by past achievements but also by ongoing actions and attitudes. e.g. people forget your brilliant college GPA after you turn 25.
More importantly, by focusing on the present and future, we continue to live fully and meaningfully and to inspire those around us.