Hi John,
Please forgive me but I'm not sure that I understand your question.
Who I am and what I do are two different things. The things that I do, do not define me or maybe only in other people's mind.
Changes are inevitable and a natural process but why
should it change who I truly am. Over the years, my ideas, ideals, hobbies, jobs even my looks and beliefs have changed along with my ability to do things the way I used to, but at the very core of my being, I am and will remain the same. Wether I give up, hiking, biking, off-roading, or whatever, it doesn't take away my integrity, kindness, sincerity, and all the other things that makes me who I am. My heart is still the same - this is my reality.
Well, this is the way that I feel and maybe, like I've said, I did not understand your question or your concern.