Severe Chronic pain will destroy your mind, body, and soul if it continues
for years. It can become a
disease in itself, there is some dispute
in the medical community about this, between Drs who study Intractable pain and those who don't. I suggest you find a way to keep it under control, forget work until your surgery, meditiation, etc can help. DR Forrest Tennant's Handbook on Intractable Pain can be very helpful (online).