Rabbi Luzzatto's Instructions: How to become a Tzaddik, "The Path of the Just"

[edu]

http://dafyomireview.com/mesilat.php?d=2
You will see on the left side of the web page that only 13 of his 26 chapters have been translated at this site.

Currently you can buy a translation of the entire book together with the original Hebrew from Feldheim Publishers.
To quote from http://shiratdevorah.blogspot.co.il/2012/05/path-of-just.html

More and more, however, people are also realizing that Rabbi Moshe Chaim Luzzatto was one of the most brilliant thinkers of the past several centuries. Both his depth of thought and systematic mind are evident in all his works, which are literally filled with important basic insights. Over two hundred years ago, Rabbi Eliahu, the famed Vilna Gaon, declared that Rabbi Moshe Chaim Luzzatto had the most profound understanding of Judaism that any mortal human could attain. He furthermore stated that if Luzzatto were alive in his generation, he would go by foot from Vilna to Italy to sit at his feet and learn from him.

The blog also provide a link to Rabbi Mizrachi's free online videos discussing and explaining Rabbi Luzzatto's book.
http://www.divineinformation.com/category/the-path-of-the-just-series/page/2/