Whereas before you noticed perhaps when you were attacking other people, and were thinking that this had no effect on you, and somewhat learned to forgive them and see their innocence, now the focus shifts a bit more directly to yourself.
"My attack thoughts are attacking my invulnerability" takes on a more obvious meaning. You literally keep attacking your own self.
The way these attacks happen is through moments of fear and guilt.
I'll be in the middle of some form of questioning, or self doubt, or worrying about something, and Jesus will poke me... ."Paul".... and then I know that means, I'm making some mistake here. So then I stop and just look at what I'm doing.... and usually it'll be sort of obvious that I'm either in fear, or I'm in guilt. Those are the two main ones.
Often though it's not so obvious what mistake I'm making. Sometimes I have to open up and try to figure it out, especially if I'm far into it. It can be quite confusing and obscure. Fear is not always obvious in its many many forms.
In general, I undermine myself all the time. So what I've become aware of is that, just as the Course says, I keep doing stuff to myself. I keep having attack thoughts and mistaken perceptions which *directly* work against myself.
So its kind of weird when you realize this, that you actually are at war with yourself. You keep on believing, thinking, perceiving, feeling and doing stuff that undermines you, thwarts you, detracts from your confidence, makes you feel unworthy, doesn't give yourself credit, diminishes your value and all kinds of other stuff.
So now it's sort of a cleanup job. You have to realize all the ways that you keep being AGAINST YOURSELF. At the very least, you have to realize you are against yourself, at all.
This being against yourself was completely covered up in a state of denial, when you were more involved with projecting onto others. And that projection really strongly distracted you from *recognizing* that you were attacking yourself. It convinced you that it was always other people who you needed to attack, who were receiving the effects of your attacks, and who this was all about. Once enough of that projecting is undone and you learn to do it less, it suddenly becomes apparent that it's actually not them that you've been attacking, its YOU.
So now you have to deal with yourself. But this is kind of interesting now, because it means that you now know you're really dealing with YOURSELF, not other enemies. You are your ONLY enemy. And there is a lot of hope in that, because it means that you are more aware that you have an opportunity. Since your enemy is yourself, you recognize that if you simply stop attacking yourself, and learn to recognize the ways that you do attack yourself, then there is basically NOTHING STOPPING YOU from becoming a far more capable, empowered, aware, happy person. There is nobody else and nothing else to influence you to stop you once you're on this fast-track to your true self.
So now the challenge for me and you, is recognizing more often and more clearly, when we are attacking ourselves, and learning what that attack comprises - is it fear, is it guilt, is it unlove - and CHOOSING AGAIN and learning not to do that to ourselves. As we do this we will grow in confidence and certainty and love and happiness, on our way home to God.