While you are believing that your ego is your real self, and as you attempt to do something about this to wake up spiritually, you're going to be pulling that ego self along for the ride.
It does not want to come along for the ride and can't. Its way of perceiving, which you have made your own, must see the approach towards truth and God as dangerous. Your attempt to expose your "self" to the truth will be seen as an attack, and is highly offensive.
This is why every time you (ie your ego-aligned self) tries to allow some light in or tries to become more spiritual, you inevitably find this strong voice emerges in you which retaliates. You have this big ego rebound where you feel all hurt and afraid and abused, as though someone just told you that you don't exist and aren't worth anything.
Your alignment with the ego while simultaneously trying to wake up from it, makes you try to wake up WITH it, and thus to wake IT up. But it cannot awaken. It is purely a device for separation and is illusory. It doesn't have a life of its own without your support.
When you try to pull it towards the truth or transform it, which produces the "spiritualized ego", you might well create an illusion or persona of looking and acting "like" someone who would be spiritual. But deep down you will have this part of you that deeply mistrusts and is threatened by what you are trying to do. Like a hurt child, that part of you will attack the part of you that's trying to pull it into the light.
Over time I've seen how personally I attempted to become more spiritual, for example by writing things which seemed as spiritual as possible. And it produced a lot of backlash for the "rest" of me that was still identified with the ego and didn't want to wake up.
When I was writing my first book, I really believed that I was opening up to light and truth and it was powerful and healing, BUT at the same time it was very painful. I felt like I was flogging myself to death, or sacrificing, or attempting to push myself to the brink of tolerance. I had a lot of ego rebounds.
Partly I felt that I was approaching truth more but there was a big chunk of me that was still holding on tightly to the false idea that I was the ego, and was trying to change "it" into something more spiritual. It could not change and did not want to and saw my attempts as deeply hurtful. And so because I was aligned with that, I experienced deep hurt along with it. I kept trying to be more spiritual in my persona.
While you're "seeking" for spiritual truth this is pretty much a given that this is going to be your experience. So long as you believe you are the ego self, that part of you is not going to like or want or believe in or see sense in the truth. It is going to be threatened by it, offended by it, hurt by it, it's going to take it to mean things it doesn't really mean, and because the truth proves that the ego does not exist, your alignment with ego is going to imply you do not exist. And that's just going to scare the shit out of you.
Gradually over time, making all of these mistakes, yearning to be closer to God, willing to push my "self" (idea of self) towards the truth, and going through endless rebounds, I think I've gradually lessened the belief I have in the ego.
Letting the ego GO is really the only way to become "more spiritual". It's not through changing it at all. It's not through making it more spiritual. The only way to be free is to be free of IT, which means your sense of who you are, your identity, your definition of self, MUST shift from ego to your Higher Self, or Holy Spirit (right mind etc).
The ego can't shift there with you. If you try to take your ego self there and pretend that you're doing it, you will just enact the ego's bungie cord. Like an elastic band it will just pull "you" right back to its territory, and the more you are trying to pull it away from its territory the stronger the rebound is going to be.
This is exactly what produces reincarnation - the attempt to get out of the world without really letting it go, elasticly brings you right back into it because you still belive you are made of it. Exposing ego to too much light will burn it, and with you believing it is yourself YOU will experience that suffering, and you will flee from the light right back into the body.
Gradually, we have to let the ego identity go and awaken FROM it to realize that it is not who or what we are. Everything it perceives is not our real perception. Everything it believes about itself cannot be what we believe about ourselves. Everything it trusts in cannot be what we trust. We have placed our faith in it and are attached to it. We have to let go and "surrender" its position to make room for God.
Waking up is painful. If we could see the areas where we believe in the ego and could simply gently relax and let go of them without adding threat to them or making them confused that we're trying to imply things which are not true or real to it, then perhaps we can awaken more gently. But that kind of ability probably only comes from a more awakened self that is able to discern lovingly. In the midst of the ego we rarely have such clarity and compassion and tend to step on our own toes all the time.
Often when I become more aware of truth and want to really "get it quickly", which can also be spurred by the ego because it knows that if you "do a lot of course" you will have such a reaction to it that maybe you'll stop doing it, using it to attack you, I'll just do too much too quickly. I will have deep emotional releases and become overwhelmed. It will also become frightening.
When I started to see that sin was not real and that it could only be my belief that I sinned that is keeping me from God, I went looking for the sin in me to try to undo it all, and that was simply too much at once. I spazzed-out for a few days and it was not at all pleasant. I had to stop and take it slower. Baby steps.
There are also times where I write about the Course a lot and maybe go into overdrive and am writing several times a day, and it all seems so wonderful and truthful and inspiring but then comes the parts of me that are still holding onto lies and they fly up into my awareness like a slap in the face. How DARE you claim that that's true! How COULD you believe that! Stop it!
By all means take a big leap if you are genuinely ready and can do so without the huge ego backlash, but otherwise, take your time and be gentle on yourself. Take a break.