The purpose of spiritual practice is to frustrate. The 'you' trying to get free of 'you' is like a dog chasing its tail. Is this not your direct experience? Have any of your efforts to find immutable freedom ever lead anywhere?
Yet, without practice and effort, we seem to remain in separation and suffering. What's going on here? This seeming dilemma cannot be stated more clearly than Nisargatta Maharaj states it:
Unless you make tremendous efforts, you will not be convinced that effort will take you nowhere. The self is so self-confident that unless it is totally discouraged it will not give up. Mere verbal conviction is not enough. Hard facts alone can show the absolute nothingness of the self-image.