To Reform

1. (transitive) To put into a new and improved form or condition; to restore to a former good state, or bring from bad to good; to change from worse to better
2. (intransitive) To return to a good state; to amend or correct one's own character or habits
3. (transitive, intransitive) To form again or in a new configuration.

(put into a better condition): amend, correct, rectify, mend, repair, better, improve, restore, reclaim