When you believe that something outside of you is the cause of your problem or upset, your mind's perception will start to experience yourself as though part of your being has 'opened up' to the other person, has exposed itself to them, is connected to them and vulnerable to them.
It feels then as if that person is directly putting your upset feelings into you. It's as though you opened an energetic doorway and merged with the other person's ego, allowing them to enter your inner space, giving them permission and access to actually 'cause you' to change - i.e. to become an upset victim.
You may not realize you do this, each time you are upset about someone or something, but you do. You are so used to it that you think it is normal. Your experience internally, of how you feel, in relation to some attacking/wrongful person, is that your insides have opened outward like a 'wound', you feel exposed, you see the other person as 'doing stuff to you', and you literally will feel like they actually are 'accessing' you - that you're in the midst of an open-air battle.
The way you can realize this is to take back responsibility for everything you are experiencing. Own your feelings. Admit that you feel the way you feel because these are YOUR feelings that YOU have chosen to feel, for absolutely no particular reason. And you have to admit that the way you feel has NOTHING to do with the other person at all. This locating of your responsibility in and around your feelings, essentially causes you to have a perceptual shift.
You now will see yourself as NOT being caused by the other person, therefore you are not a victim, and therefore what you are feeling has NOT been caused by them. These are your own experiences. And in a way, this 'detachment' puts SPACE between you and the other person's ego or whatever the illusion is that you're faced with. This will in a way act as a protective barrier or wall, sealing you in, making you experience yourself as secure and Invulnerable, NOT exposed, and that the FEELING ITSELF that you're experiencing is not BASED ON what the other person is doing.
When your feeling is not based on some external cause, then there is no FOUNDATION for it. Without a foundation, it has no cause, and IT MUST DISAPPEAR. So... taking full responsibility for everything you feel and experience, paradoxically, FREES YOU from all upsetting and negative experiences, because there is no foundation for any kind of harm or negativity when you are BEING TRUE TO YOURSELF. When you are being the LOVE that you are, you are invulnerable. When you are not being the love that you are, you become susceptible and exposed and a victim that is sure to be hurt. You don't want that. It's much better to not be upset and vulnerable.
Perfect immortality and complete invulnerability and protection and un-assailability of the Kingdom are all your natural inheritance if you will claim ownership of it.