Will myasthenia gravis ever go away?

MG Remission. Yes remission can occur for several year at a time.
Possibly. About 1/3 can see spontaneous remission, 1/3 stabilize on chronic medications, and 1/3 have progressive difficulties. Chronic and/or longterm medications may aid but can have significant adverse impact on life and/or health. In appropriate candidates, minimally invasive thoracic surgery to remove thymus (thymectomy) can possibly cure or stabilize disease or decrease amount and/or types of meds.