I have the same problem but I am currently in a relationship and it has also transferred to our sex life. At the beginning of the relationship I was able to last at least 20 minutes and now we have sex for 2 minutes sometimes... Since then, I have less confidence and unfortunately have discovered the cuckold fetish for me what does not really help to get over it. But despite my new fetish I watch less porn now and do sports again to find my old form but I think the fetish will not disappear again and will cause me some serious problems in the future. If I were you, I'd better try to change my behavior slowly and think about what could have been the trigger for your problem. I am already thinking about going to therapy to understand my submissiveness but I really hope you don't fall down the downward spiral like me and get over it without permanent harm to your sex life or your self-confidence.