Hi Oldman... I'm very new to the forum & have just found your post.
Your picture says to me that 'you are not an old man'. Think of yourself as a young man and don't let anyone tell you different. Our minds are powerful things and the 'stuff' we tell ourselves unconsciously, affects who we are.
I have been on this fitness/weight loss journey quiet a while, and I see myself as an 'athlete'....why not?
I often say to myself, "would .....(another famous athlete) do this or eat that". It works for me, find what works for you.