Viewing this stern warning from that end, we find a hint as to how lost ground can be regained. For by concentrating on the light, on higher truth, and on images that bring truth to mind, attraction to the light will grow again. Yogananda used to say that darkness cannot be driven out of a room with a stick. If affirming darkness develops attraction to it, then the same may be said of focusing on the light. For awareness grows by what it feeds on.
Bad moods are self-perpetuating.
Hurling anything in anger, however, only affirms anger. Any focus on negative attitudes only strengthens them. To judge others for their sins, also, affirms sin itself not only in others' minds, but in one's own. Karmic law rules that whatever one judges in another he must experience himself, someday. It is a mistake even to affirm good attitudes with a negative emphasis.