Yes it definitely does. The feeling of being self conscious and social anxiety are also factors contributed from PMO. But self confidence also comes from practice. Expose yourself to the things you fear the most while abstaining from PMO and you'll feel the difference
Day 25. My self confidence has been fluctuating the last couple of days which to me is a sign that I'm healing. Onto the next...
Day 5/30 Quick advice, the begginers do not try to tempt yourself by opening half naked ladies and a glimpse of pornography. There is no reward system in NOFAP challenge that invites you seeing/ take a glimpse of nudity/pornography/partial nudity. That is how relapse happens boys. Stay alert.