A good practice to follow: cutting etheric cords by invoking the help of Archangel Michael (see second to last paragraph):
Etheric cords carry toxic energy. They are attached to you from people and events in this life and from past lives. Part of past life therapy involves cutting these cords from those lives. Once you’ve forgiven the people and events from those lives, make sure you cut the cords to those lives. That is the final stage in healing your past lives, in my opinion.
It also applies to forgiveness in this life: “seal the deal” on healing negativities in this life by cutting etheric cords with the help of Archangel Michael.