You'll find different methods/experiences with journaling here: http://www.mindbodygreen.com/search?q=journaling The right one really depends on you. As P addicts it can be useful to understand our addictive patterns, but also beyond that: addictions don't arise out of nowhere, so we can't analyze addiction out of context (which is our behaviour and environment generally speaking). The idea is twofold: first, by stating your emotions, they lose power over you; it's a mindfulness exercise because it helps you switch from "this person really was an asshole, I was in my right yet this person wasn't, ..." to "what happened made me feel angry. I had this feeling of righteousness which felt like this and that", and over time you can see how one emotions leads to another and influences your thoughts. The second aspect is that you recognize some associations. It can be over-eating (or over drinking or whatever) one day, sleeping late the next day and bingeing the day after. Patterns emerge, and you can see the root cause of what makes you fall into unhealthy behaviours. And the earlier you spot a streak of poor choices, the easier it is to stop it. Conversely, you also see how positive behaviours positively influence your state of mind for hours/days afterwards.