Not every mystical tradition says the same thing
It's not true that all mystical traditions say the same thing. I hear that a lot on the internet, but there are subtle differences that are quite substantial.
For Hinduism, ultimate reality is amoral and impersonal, and identical to our true being, so approaching it, is simply a matter of redirecting the intellect; that is, the spiritual path is just a recognition of something that has always been there. Buddhism is very similar, except that it denies transcendence and the existence of a substantial self that unifies the person. In these two traditions, the seeker sheds their false identities, but they don't have a connection with a personal all-loving God.
The Sufi tradition is a step ahead. It conceives the self as illusory, just like Hinduism and Buddhism, but it has a connection with God. Therefore, the place that the self occupied is ultimately filled by God's infinite love, not the abyss of the two previous traditions. Sufism is my second favorite tradition.
And the Spanish Christian mysticism of Saint Teresa and Saint John of the Cross is, in my view, the culmination of the mystical path. Because in it, one leaves behind their false identity, and in its place, their true self is born—unique, unrepeatable, and purified of illusory identities, yet preserving their individuality. This individuality is exalted thanks to the love of God.
In the Far East, we find only the abandonment of false identities. In the Middle East, the abandonment of our false identity and its replacement by the infinite love of God. And in Spanish Christian mysticism, we find the death of our false identity, which, like the mustard seed, dies so that a new plant may grow from it, representing the true self. And this true self is divinized by the infinite love of God.
Far East: only the overcoming of oneself.
Middle East: the overcoming of oneself so that the love of God may be born in its place.
The West: the overcoming of oneself, so that your true self may be born, divinized by God's infinite love.
This is what I've discovered on my own, after an extensive research into various traditions. I hope it helps you, and if you think I'm making any mistakes in my classification, I'd be happy to read your suggestions.