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).
The practice of recollections brings a sense of immediacy, heightening attentiveness and focusing the mind. With each recollection ask, "How is the mind being affected?" The embodied response to this is a means for breaking old habits and releasing kamma.