given that you are in pain due to a cause and you have to be like that for the rest of your life
, what would you do?

just endure the pain, and continue to do things if possible until you die loh. if the pain is so irritating that you cannot bring yourself to do anything except feeling the pain, then just live in such a way until you die loh.

the point is that you do not confuse and become paranoid just because you have a irritating pain and worsen your own situaiton. you should not drive yourself towards depression, and other negative states when it could all be just a matter of observing the pain, enduring it and thus minimizing as just a sensation. read more about buddhism's way of enduring pain.

be strong and do not do foolish things. at this point where your body is at discomfort, the mind is prone to negative thoughts which will then create more physical discomfort, thus create a spiral effects of negative events. if you read more on psychology, you will realize that mind and physical body has some connections which explains why people find it hard to recover when major unfortunate things happen on them.