hard time getting motivated

I don't let the age thing beat me down. If you give in your dead. I'm 65 have had some pretty rough jobs and a back surgery . I don't get up as fast as I did ,point is I get up.
After I sold my Hemi from the Dart I repainted the engine bay. I don't have a shop so I work out of a 15x 25 car stall crap everywhere from the Dart. I have a 470 I bought setting about three feet from the Dart , most guys would be jumping up and down to put the two together , I 'm usually a pretty motivated person so I don't know what the deal is.