Most of your perceptual errors and projections come about because you simply lack some information. You are unaware of some truth. Some pieces of the picture are missing for you.
You try to make sense of what you see, ie what you are aware of, and you look around and you do not see yourself as being the cause of what's happening. So it MUST be someone else.
It becomes totally reasonable to come to these false conclusions, based on the evidence you are aware of. They make sense. You're just trying to make sense out of what you are experiencing.
So if you seem to be upset and suffering and you do not SEE that you have done this directly to yourself, you will quite naturally and understandably start looking for causes elsewhere. Maybe it was someone else that did this to you?
And then it becomes very plausible and acceptable that its "true" that someone else must've done this, so you blame them. You're not really trying to be an asshole, you're just trying to make sense of your experience of your little slice of reality, and are confused because you don't really know everything there is to know.
So it is really forgivable, that you make these mistakes. They are very understandable mistakes, given how little information you are aware of. There are all kinds of things going on in your UN-concious mind which you are not even aware of, and there are ways you're doing things to yourself that you do not even see.
And there are beliefs that you have suppressed that you may not even be aware that you believe. And as these things play out, they seem to come out of nowhere and you can't explain how or why, they seem unjustified, and therefore you are justified in being angry and see yourself as victimized.
It's ok. You just don't have the full awareness of all the facts that you would need, to come to any other conclusions. Based on what you ARE aware of, your conclusions make a lot of sense, IF these limited facts were all the facts. But that's a big IF, and they are not all the facts at all.
All you need to do then is become more AWARE of more of the truth, to make what was unconscious conscious, to re-awaken your whole mind, and become able to SEE the whole of the truth. This will clear EVERYTHING up for you. You will see it all in a new light, and you'll be like, OHHHHH, now it makes more sense!
Then what you thought was a truthful explanation for why you were a victim, now becomes more obviously seen as a choice you made on your own, or something you did to yourself. And now you can very EASILY let other people off the hook because you can SEE that they really did not do this to you - you did it.
All you need is just more information. More awareness of the truth. That will shed so much light on what you are experiencing and will explain everything. And it will help you to see that there is really no need to be upset, because separation hasn't even really happened and nothing in this world is real at all. And then you'll remember to laugh, and be justified in laughing, because the truth will set you free from your mistaken perceptions.