I agree with Ken on developing a sense of humor about the ageing Body. I'm 69 and among the many other things, the hearing is not so good.
As a matter of fact, my hearing reminds me of Mr. McGoo's eyesight problems in the old movie cartoons. I get a real laugh sometimes between what someone "actually says", and what I THOUGHT they said. When this first started happening, I would think, "I can't believe he/she said that"
and after I would ask for them to repeat, (louder and facing me so I could see their lips) I would cetrtainly be happy that I had not repeated what I thought they had said.
Now it just gives me a good chuckle, especially since I know that my loss cannot be fixed or improved with hearing aids.
Lifting things as you have noted requires some ingenuity with things that we used to just reach and get easily and think nothing of it, and now discover to our surprise that the thing won't even budge. After making my own plywood sheet carrier a while back and finding that it caused much back soreness because all the lifting was on one side, I did develop a new way to carry 3/4" 4' x 8' plywood sheets quite easily. ( I should have discovered this years ago, it works so well). I just stand it up and lean it slightly against a wall or something, then back up to it and squat slightly and reach behind me and grab each edge and straighten up leaning just slightly foreward so it rests firmly against my back, and I can carry it as far as I want with no strain. (Some new tricks for us Old Dogs are sure worth learning).