Hi,
Chronic Pain these days is a well defined specific diagnosis. Have you been diagnosed as that by a pain team/ medical specialist? And if so, why have they not put you onto any kind of formal rehab??? Hm.

Generally, for Chronic Pain rehab you need interdisciplinary input from a rehabilitation team experienced in Chronic Pain (Physio, Occupational Therapy, Medical Specialist, Psychologist, etc.).

In Chronic Pain, all your pain pathways have changed. E.g. the threshold for pain perception might be reduced. Basically, the problem used to be in the periphery and is now in the way how sensation is interpreted in the brain. Therefore, local intervention focussing on biomechanics only will not help (e.g. rest/ ice/ ...). You need gentle functional re-activation and likely de-sensitisation +/- medication and psychological support.

There is also heaps of good websites if you wish to read up about it. Even Wikipedia is not too bad.
Chronic Pain Australia

Good luck,
Fyzzio