I work with my beliefs for years. Actively. Tracking root of the belief and heal it or replace it with the one I want. It is introspection and active work.
You can try shortcuts and see how it works for you.
I didn’t have any results with subliminals apart from attached entities and issues. I will never touch them again. I used binaural beats, quantum device (physical one) etc. etc. but nothing really worked like Connector + clearing beliefs one by one + using fields + meditation + visualization + my energy work + taking actions and steps + years of clearing + cosmetics that sometimes are even better than mandalas.
Work with the subconscious mind is unique and very personal. Try what works for you the best. If you see no results then find a different approach.