Preferably the convolutions of the mind that constantly tell us stories which are fantastic and unbelievable. Yet when we hear them, we ourselves believe them. One way to look at them and disbelieve them, is to write them down. They sound absurd when they're written down on paper. The mind can always think up new stories, there's no end to them.
Renunciation is the key.
Giving up, letting go. Giving up also means giving in to that underlying, subconscious knowing that the worldly way doesn't work, that there is a different way. We cannot try to remain in the world and add something to our life, but rather give our ambitions up completely. If one has a non-functioning machine and adds another part to it, it's not going to make it function. One has to overhaul the whole machine.