Would you consider the first part of any meditation for astral traval or awareness to be removing the physical barriers, then tackling the Ego?
In my own limited experience ego can be tackled by contemplation, then It needs to be buried by the journey. Then... It's like a zombie it rises again and needs to be reconized. It's not stupid. It's as smart as you are, and will change forms and prod you. Some even call it demons. There is a reason why demons are a metaphore for internal struggles