An atmosphere of friendly acceptance helps us to stay present and engage in a clear, direct handling of experience in the body – rather than becoming a besieged and separate self.
Right effort is based on right view, discerning what we want to align the citta to, then absorbing those qualities like a sponge. There is an energy to these qualities that can be sensed and directly felt in the body.
Our inability to stay with unpleasant feelings causes us to dissociate and split off. Attention to breathing provides the anchor to stabilize volatile emotions and creates an agreeable abiding that paves the way towards unification (samadhi).