I think the passion you have for the guitar is evident from your post and that in itself is the answer. No way are you gonna give it up!!
You say you've made great strides and you KNOW you're gonna keep on making 'em through blood, sweat and tears.
Also, is playing guitar not a form of physiotherapy as far as keeping your synapses firing to the best of their ability goes?
Keep it up, you're an inspiration to us all!!
One more thing.......GO BUY THAT GEEEEETAAAARRRRR!!!!!!!
head_creeps