Watch my soul for I am a pious man; save Your servant-You, my God – who trusts in You.
A pious (Hassid) is one who asks for one thing: not to be separated from the Creator. So all the songs of Psalms, all the requests and prayers speak only about this—not losing confidence that the Creator is the only power that manages and sustains a person and everything that is found within him, but which is portrayed for him as an external world and changing reality that passes through incarnations in front of him and within him.
All of this comes from the one higher power, and the person wants to permanently adhere to this fact until he discovers this with all of his strength, thus attaining constant adhesion with the Creator in all desires and thoughts, in heart and mind. He becomes a Hassid who wants only to adhere to the higher guidance above all disturbances and problems. So he awakens the disturbances in himself to bring to light all of his abilities and be in adhesion with the Creator.
The person asks for only one thing: help for him not to be separated from the thought that “There is none else beside Him” and the recognition he must be involved only with the one Higher Power. And this is not because he is concerned about himself and wants to feel better but because through this he wants to give contentment to the Creator.
From the Preparation to the Daily Kabbalah Lesson 5/15/14