Sadly I have a wealth of experience in this wretched bloody disease!
So to cut a very long story short, please just get over the feeling of being robbed it's just a downward spiral and will eat you, I know it's not easy but you must find new things to do, you will need to fight hard to look for the next positive thing.
Hope you don't find this patronising, trust me, I have the tee shirt on Parkinson's.