Haha, interesting you made this post.
I don't know what it was, but last year during fall I felt the same way you did on Molly every single day. I never felt more confident in my life, and I truly felt I was the catch. I was able to live in every moment without negative voices or insecurities getting in the way. I ended up dating 10 girls including a belly dancer and a stripper.
I'm not sure where that high came from, but come winter and up until now, I've never been able to get back to that point again. I know I have it in me, I experienced it naturally for 4 months. I made more friends and dated more women in that period than I did my entire life.
Funny thing is, I was in horrible shape back then, but I really, truly didn't give a shit what people thought of me. I wasn't saying it to myself, I genuinely didn't care and didn't let me affect my interactions with people or women. A year later and I'm in much better shape, yet my confidence is shattered.
I can still talk to girls and get dates, but I just don't feel that extreme fluency in conversation with anybody - friend, lover, guy, girl, family, etc - anymore. Not sure what the deal is, but when I find out how to get back to that point I'll let you know