Sefer HaMidot – literally translates as The Book of Character Traits – is one of Rebbe Nachman’s books. It is arranged according to issues in alphabetical order from Emet (truth) to Tefila (prayer), and most chapters have two parts.
The first part is a compilation of verses from the Tanach, Oral Law, and poskim pertaining to midot and segulot (traits and spiritual remedies) which Rebbe Nachman completed before he became Bar-Mitzvah, i.e. before he reached age 13.
The second part was compiled later in Rebbe Nachman’s life and reflects his own insights regarding the issues.
He said of this book that it is what made him a real Jew.