In response to your question.
I wonder if God and EGO can exist in your heart at the same time? hmm. I haven't found that answer yet but trust me, I'm searching high and low. Maybe when I find it, I'll be in 5D. Whatcha think?
It is my understanding that the EGO only exists in the Mind/Brain. So if you live from your heart, it will overrule your EGO. If you always do everything with LOVE then you are living from your heart and not from your EGO. Sometimes your brain tells you to do something opposite from what your heart is saying, make a conscious effort to listen to your heart first regardless of what your brain is saying. It takes a lot of effort to overcome all those many years of programming.
May your Ascension Journey manifest as your heart's desire.