Hi Capt Mov,
Depends on your background. If you have ever been any sort of instructor it should not be too difficult to move into ground instruction. If you have had management jobs in aviation you can be the Head of Training or the Flight Operations Manager of a company by dint of having held the appropriate licences and ratings.(been there done all that).A fellow pilot had his heart attack at an early age and ended up as the Operations Officer of a large aviation company. If you are literate and good with orders there are always companies looking to rewrite Operations Manuals etc.
I sympathise with you having been down the "lost my medical" route three years ago. If you want to stay in the business you need the usual career enhancers - determination, qualifications,timing and luck. Being in the business and not flying is not as pleasant or as financially rewarding, but if it has been an important part of your life go for it. Good Luck