Cut and Clear work is great to completely excise a person from your life - to never think nor speak of them again. Logistically this can only work in certain situations. For instance, one example when it wouldn't be appropriate is if a person wishes to use it on the father of their children - obviously, except in extreme circumstances, you wouldn't want to completely cut this person out of your life since you have to co-parent with them for the rest of your children's lives.
I love Black Walnut because it is used to enforce and establish boundaries. These can be emotional, physical, or behavioral boundaries. It fortifies you as a person and gives you the strength to prioritize yourself and prioritize healthy behaviors.