Upright: Follow your intuition and never succumb to self doubt. It is what the creatures there want. You see, in the realm of the Dark, nothing is more illuminating and utterly powerful than one's own intuition and will. For true madness requires an empty vessel and you are far from empty. If you doubt, do not give in. Try your hardest to resist the call of the deep dark and walk your own path to ease your doubt.
Reversed: But do not forget what you set out to do. These creatures are dangerous. They feed off your negativity and there is immense power in turning something so vile and empty into pure power. Just remember that the more you linger there, the emptier you will become, until all that remains is your mindless, empty husk.