I too am in my 60's and I commend you for pushing onward to finish your project. You would be surprised at how many of us have numerous & wonderful things we have never finished. Don't be hard on yourself - pat yourself on the back! Maybe a very small thing like a little pin cushion for someone or a really pretty piece to connect to your bra straps for tops too low would help. Then you could get back to your work and still have little pieces of work to make you feel proud.
Dolores