Pain in right hand wrist. Past 6 month!

There can be multiple reason of pain in the wrist , which can be of local origin means the pain arising from the structures in the wrist or around it, or it may be pain that is getting referred to the wrist because of some other cause. As  you have mentioned that you have to use computer systems for long time you can be suffering from CARPAL TUNNEL SYNDROME, which can be local cause of pain or you may  have degenerative changes in cervical spine, cervical spondylitis or Prolapsed or bulged disc( slip disc in layman terms) in neck can also cause the pain in various parts of upper limb... So we first need to ascertain the cause of pain then only the treatment can be decided. Please seek help from the nearby orthopedic surgeon or musculoskeletal physiotherapist... Get yourself diagnosed first, then treatment will get properly channeled.