I'm in a similar situation, without the surgery part thankfully. I can't use my right hand because of tendonitis in my wrist and elbow.

I am slowing down alot and deciding what is really important as I move through my day. For exercise, that means Pilates and tai-chi. Yoga's mostly out. I also got a trainer and do two short rides per day, adapted to not hurt my wrist and elbow. For work, same thing--what is most important to get done? Let the other stuff go. I've found it very useful and it's good to focus like that. I've become quite adept at using the computer mouse with my left hand. I will continue that because bad right mousing got me to this point.

Hairdryer is not being used. Dog gets walked on my left.

Things take longer. That's okay.