I was this guy for a long time. I called myself a Christian, yet I got drunk every weekend, did drugs, and chased women (and sometimes caught them). I talked the talk, but I didn't walk the walk.
Look, it's not about not doing this or not doing that. It's about wanting to become a better person. It's about trying to be the best that you can to your fellow man and becoming the person you're supposed to be. Now yes, part of that is not drinking, not doing drugs, lowering your gaze, etc, but that's not all of it. You can do not all of those things and still be a jerk. You can do all of those things and still be a decent person (just a misguided one). But in the end, this life is a test, to see who will become who they are supposed to be, and who will piss their life away in misery and self-loathing (as I did for many years).
It took me 35 years to figure that out. I feel like my life is starting over at this point. Act 1 was me pissing my life away in pursuit of meaningless things. Act 2 is where the main character (me) becomes the man he is supposed to be before he dies, inshallah.