Just wanted to add my commiseration and support.
I too have had a stroke.
It upset my world.
I also know from a recent head scan that the arteries are not working there as well as when I was a young man.
My suggestion is that you persevere with your learning experience (and Xara is a complicated program in my opinion - especially when one digs a little deeper) not just with Xara but other fields that appeal to you. I'm learning to play musical instruments - even had to buy a special plectrum that I could grip it with my right hand when playing guitar.
I do word puzzles and play complicated games.
All of this is designed to make my brain work.
It's difficult - but you will see progress - and that is surely the way forward. That, and trying to avoid the reasons for the stroke - easier written than done.