Couple of questions.

Start a diary.Lots of great man in the history of mankind had a diary.

 

When to the beginning of the hardest yet most meaningful part of your life. I have read your journal and I will guide you as much as I can.

 

Mindfulness meditation is by far the best. It has helped me personally tremendously to learn how to deal with urges and triggers. It takes a while to get good at it and notice results, so you need to be consistent with it, but once you do it's extremely powerful. Nothing else even stands close. Have you seen this Ted talk? It gives a good idea of what's it about when it comes to philosophy. If you combined this mindfulness practice with daily practice of sitting meditation after few weeks urges will not be problem.

 

I would recommend reading Patrick Carnes' book Out of the Shadows. It helped me understand sexual addiction a lot.