We are not going to try to function as a psychic advice line here, but in my experience, bathing is so natural and positive for most human beings, that if taking an Uncrossing bath makes you feel "depressed, angry, and negative," it is very unlikely that you are "doing something wrong" or that the bath product itself is defective.
Rather, you may be under some form of spell of negativity, you may have social or mental issues too difficult for a mere bath to change, or there may be other things going on in your life that are keeping you from feeling affirmative, hopeful, or at-cause in your life.
I would continue with the 3 baths, as you planned, but perhaps a reading would be of help to you as well.
Here is a book that is extremely reasonable in price and will help you greatly, i believe: It was written by our own Forum moderator, Aura Leforest:
Hoodoo Spiritual Baths by Aura Laforest
You can order right here in the Forum by clicking on the blue Add To Cart button.