Start here, then go here, and then go here.
As I noted before, this whole series started from thinking about New Year's resolutions. In my case, to focus on battling the passions. There are four sources of my thinking here. St. John Cassian's, Monastic Institutes (especially Book V, two lengthy excerpts of which I have posted on my companion blog, here and here), Benedict of Nursia's holy Rule (especially Chapters 39-41, which I will post on my companion blog tomorrow), St. Theophan the Recluse's The Spiritual Life and How to be Attuned to It (especially Letters 53-6