Tips on how to improve memory?

I have seen a lot of tutorials on how to boost up your memory, but I am not sure which one is the best. Since this is the "Self-improvement" section I believe a lot of you have tried this in the past. Any specific method?

 

Problem is I am using it, but due to brain fog that's caused by internet and porn consumption it's very difficult for me to remember stuff. But even the last time I had managed to abstain months from porn, I didn't notice any difference in my memory. That's why I want to rebuilt it, but just memorizing information, facts, dates, numbers etc doesn't really help me, I think I need to learn a method first.