Put on foot in front of the other and start walking the walk.
You're right, ideas won't get you into recovery, actions will.
When I was first starting to get sober, I found that active, aggressive shmiras eynayim in all settings was not only necessary to cut off my drug, but it also was a positive action, a constant reminder that I need to DO for my recovery. I also found frequent, brief tefilah asking Hashem to take my lust, to be another helpful positive step.
But these are both really about sur merah. Asei tov would include doing things in your real life to make it better and sweeter to you. Getting together with friends, exercising, learning, reconnecting with family. Righting wrongs.