write a story about a a young person in a down trodden yet bustling urban metropolis that is a relatively stable domain, in a worn torn, oppressed world.
Even though his city is more progressive, he still grows up around the struggles of the lowest class. He deals with physical challenges similar to yours,
and he learns and identifies with the struggles of the less fortunate and oppressed which gives him compassion (I am not saying this is you just for character effect)
The locals love him and he has a nice robin hood thing going. Until one day someone else gets blamed for his theft and is butchered. He sees the injustice done, and feels powerless to stop it.
He exiles himself out of recrimination and by some turn of fate/ fortune- he finds an object
(metaphor for subliminal-insert here power stone/dragon egg-sword like excalibur here) and starts gradually transforming healing and gaining remarkable powers.
But he must stay close to this object for many months while his powers and abilities surface. He learns there are other power objects like this each which gives incredible effect if he stays with them long enough. But there power diminishes if he holds onto too many objects at a time.
The rest can be about, him getting separated from power object at times, needing to use new power objects, all while he grows stronger and stronger to help stop the injustices of the land. Which is run by warlords and corrupt kings, seeking the power objects for themselves.
ok hope that gets you jump started on something.