I hear you.
Thirty-four years ago now, I was diagnosed with several conditions. I could not imagine living with the diagnoses. I was young and did not want to live if I could not live a very active lifestyle. I am glad that I had a good therapist as I went through the grieving and the adjustments necessary to carry on. I have had a fairly good life. Lots of challenges; yet, lots of rewards, too.
Do you have a therapist to help you work through the stages to reach acceptance? Do you have support? I hope so.
Your life may be more challenging than you had anticipated; however, it's still precious and worthwhile. I hope you find a place of inner peace.

WC