One problem with evolving into an Angel is that the human mind, deluded by the illusion that sense perceptible matter is all that there is to life, can pull the soul of a human backward in evolution to the animalistic path of the Seven Deadly Sins — the dark vices that kill, instead of the heavenly virtues that give life. Every thought, feeling, or deed either creates the wings of our evolving Angel-hood, or the horns of our devolving animal-hood. Every virtuous deed directs the effects to a light-filled future, whereas the selfish effects of vices are directed towards a dark future in opposition to the Divine Plan. If you haven't decided which one you are aiming at, then you might be devolving towards a sub-natural world of darkness instead of a super-natural world of wisdom-filled light.

Even the lukewarm attitude of an agnostic is drawing the soul and spirit into dark realms because they are not keeping up with progressive spiritual evolution. Standing still is ultimately going backwards in evolution. Therefore, leaving your spiritual work to the priest/guru or simply going to church to sing and pray may not be developing your personal understanding of how to become an Angel.