Good character consists of recognizing the selfishness that inheres in each of us and trying to balance it against the altruism to which we should all aspire. It is a difficult balance to strike, but no definition of goodness can be complete without it.
The more we grow in love and virtue and holiness, the more we see love and virtue and holiness outside. All condemnation of others really condemns ourselves. Adjust the microcosm (which is in your power to do) and the macrocosm will adjust itself for you. It is like the hydrostatic paradox, one drop of water can balance the universe.
Burns' Hog-Weighing Method: (1) Get a perfectly symmetrical plank and balance it across a sawhorse. (2) Put the hog on one end of the plank. (3) Pile rocks on the other end until the plank is again perfectly balanced. (4) Carefully guess the weight of the rocks.