On the topic of reciting Tehillim (the Book of Psalms):

Rebbe Nachman told a person with whom he spoke that the main thing in reciting Tehillim is to say all the psalms as referring to oneself, finding oneself in each and every chapter. The man asked the Rebbe, of blessed memory, how one does this, and the Rebbe briefly explained: All the battles from which King David, may peace be upon him, entreated God to save him—a person has to apply them all to himself, as referring to the battle against the evil inclination and its forces. Likewise, with the other chapters (as explicated above, in Lesson #101).

And the man asked him how it was possible to apply to himself those verses in which King David, may peace be upon him, praises himself, for example: “Guard my soul, for I am devout” (Psalms 86:2), and similar such statements. The Rebbe answered him: This, too, one must apply to himself, because a person has to judge himself favorably. He has to find in himself some merit and good point, that in this good point he is considered devout and the like.

The Rebbe, of blessed memory, also said to him: Is it not written of Yehoshaphat that “His heart was elevated in the ways of God” (2 Chronicles 17:6)—that he prided himself a bit in the ways of God and in serving Him?

The Rebbe, of blessed memory, further said to him: Do we not say at the start of the morning: “What are we? What is our life?…” We belittle ourselves a great deal, but then say: “Nevertheless, we are Your people, members of Your Covenant…” That is, afterwards we encourage and boost ourselves, and speak of our greatness. And we pride ourselves in being His people, members of His Covenant, the offspring of Avraham, Yitzchak and Yaakov…. This is how we need to conduct ourselves in the service of God.

Study this further in Likutey Moharan I, 282, on the verse “Azamra (I will sing) to God with the little I have left” (Psalms 146:2).

Chazak! Chazak! Chazak!