The question may seem vague -- what do I mean by "yourself"? I googled it, and there's something by the Indian mystic Osho, and it's the title of a book on the Persian Islamic poet Rumi. But does any existential philosophy fall under this, or better yet discuss it?
Freedom from the self is NOT an existentialist concept, but it does occur frequently in other places throughout philosophy. One of the most famous is in Plato's Republic, where the unjust man is depicted as intrinsically unhappy because he is a slave to his own desires.
Freedom from the self is a concept also frequently found in religious philosophies, including Buddhism, Taoism, Zen and Christianity.