Sefer Shem Olam is the Chafetz Chaim's "Shulchan Aruch for how to live life" in which he elaborates on the follwing three topics: Shabbat observance, doing Chessed and strengthening the Torah as essential keys to acquiring a good life in this world and an eternal remembrance in Olam Haba.
In Kuntres Nefutzot Yisrael, he addresses the reasons why people launch into spiritually ruinous lifestyles and concludes with advice on how to bring Beracha into one's life.
Hebrew with facing English translation entitled Mazal Elul.
