I feel like my life is over

I've been suffering for two months. Fortunately, my EMG -- which I could not finish, and hope never to repeat -- shows zero nerve damage and is negative for carpal tunnel syndrome. However, my doctor is confident that I do have carpal tunnel syndrome. Steroid injections relieve my symptoms for a few weeks, but now they're coming back.

My doctor does not want to perform surgery yet. He said I need to adapt and change my activities. He said I could have up to two steroid shots per year and perhaps in five, 10, or 15 years I will be ready for surgery.

I am 37. I am still young-ish and have energy and do not want to live at half speed. I enjoy long road trips, cycling, tennis, scuba diving (both wetsuits and drysuits must seal around your wrists, which causes compression). I do not want to struggle with this for many years.

I'm also worried because my doctor said that surgery may not be a cure, and my symptoms may return, and I may have to change my activities anyway.

I want to die.