Asking for, and creating protection is an essential energetic life skill.
This is one of the fundamental tools we need for maintaining healthy boundaries and overall safety. Using the example of a single physical cell, the cell’s survival depends on it’s maintaining a healthy cell membrane, which is permeable to life supporting nutrients, but closed to compounds that would be physiologically destructive. Likewise, it is our job to be selective in what we take in and what we do not.
One of the most effective ways of increasing protection and safety is by asking for it clearly whenever you feel the need. Archangel Michael, in particular, is a powerful protector, although you can call on any Light Being you feel close to for assistance.