"It takes a great deal of energy to doubt yourself constantly, and even more to beat yourself up--or down--even if it's only in your own mind. While you are engaged in mental or emotional battery, you are bound to feel exhausted. In the midst of mental or emotional exhaustion, the negative ego can and will trick you into believing that you now have a valid justification for why you should not, cannot, and do not trust yourself. This is what I call "the dark side of trust," the internal experience of questioning and doubting yourself, your desires, and your ability to hold your own."