Mistakes are almost always of a sacred nature. Never try to correct them. On the contrary: rationalize them, understand them thoroughly. After that, it will be possible for you to sublimate them.
Source: Diary of a Genius, entry for 30 Jun 1952.
-- Salvador Dali, (May 11 1904-1989), Spanish painter, printmaker; He led the Surrealist Movement; noted for his explorations of subconscious imagery, e.g., Persistence of Memory, 1931.