Doing is acting on that which is within; Doing is also acting on that which is without.
Simply put, you act on things that arise naturally from within yourself, such as going for a walk; you also react to things outside of yourself, such as dressing appropriately for the walk.
Being-in-integrity increases well-being; being-out-of integrity creates ill-being.
Doing is where being is actualized.
Doing is the what, where, when and how being-in-integrity increases well-being; it is also the what, where, when and how being-out-of integrity creates ill-being.
Doing things that are in integrity means actions and reactions are integrated, aligned and balanced.