Premanand Maharaj Ji
Why does ego stay even after I do spiritual practice and humble myself?
Ego hides even in sadhana and humility
Ego is so subtle that it can sit inside your practice, your renunciation and even your humility. Keep the company of saints and the Guru, and read the lives of devotees, so the ego dissolves.
Ego is a very subtle matter, very subtle. Only the Guru destroys it.