According to GFL, what is the best way for humans to release negative beliefs?

According to GFL, what is the best way for humans to release negative beliefs? And why are they so hard to change? What is the best way to connect with the subconscious and release the negative beliefs and replace them with positive ones according to them? Do they also need to work on their beliefs? Or is it unique for humans to feel feelings of not being good enough, not believing in themselves, etc.? Is their consciousness also structured like ours, with a conscious and a subconscious part?