According to Osho, conviction becomes experience not through any method but through awakening: a steady, moment-to-moment remembrance that you are consciousness, distinct from the mind's memories. Stop seeking how; simply stay aware as you walk, talk, eat, sleep. This non-method deepens by itself, until insight explodes into direct, existential knowing - no knower, no known - transforming belief into lived reality.
Don’t look for a technique; just keep noticing you are the watcher, not your thoughts or memories, and real knowing will arise by itself.