The Boy Scout rule

As my main spirit liaison once told someone, "If you want to hang about in the pool hall of the souls with the riff-raff and the hustlers, you can. But you don't have to." Another saying he is fond of is, "Like Light attracts like Light," which is tongue-twister way of saying that birds of a feather flock together.

This means that generally you will attract entities who are on the same wavelength as you are. If, for example, you as a human being haven't spent a lot of time on things like living ethically, with self- and other-honesty, trust, good-heartedness, and so on, or if you have a lot of judgments about yourself and the world, and a lot of restrictive beliefs about how things work, then the entities you attract won't be trustworthy or particularly forthcoming with the truth, nor will they be trustworthy in other ways, and in general, when you channel them, you will get slimed, spiritually speaking. Though you may enjoy it--life is odd that way.

Conversely, if you have been honest and true, and have held and followed higher standards of decency, honesty, justice, and, ultimately, love in a deep and universal sense, then you will attract the kind of entity who likewise holds those things to be important.