(NSFW) How do you satisfy your partner?

It is clear to me now that I have a very serious problem, when coming to sex. My girlfriend and I tried to hit it off, but I became soft, again in the mix of things. She was upset, only at first but then she told me it was nothing and that it was OK. I believe that the problem is over masturbation and porn, which I am trying to quit cold turkey. Bottom line is, I want to know from you guys, especially you fellas who are married, how do you satisfy your woman and you women who are satisfied, can you share some secrets that your male partner has done, and if that embarrassing incident has ever occurred with your man before?