From my experience not masturbating just makes you hornier which makes you more motivated to meet women. Also, all the people that claim that it gives you super confidence is probably feeling the confidence through a sense of self control rather than not masturbating. When you discipline yourself and dont jerk off, it gives a huge feeling of self control and THATS what increases your confidence/self-esteem.
I also felt this surge of confidence when I started working out again after a few months and stuck to it. It's not really the actual working out that increases your confidence, it's more the fact that you're actually sticking to it and not giving into the laziness. Same with masturbating. When you know you have enough willpower to not jerk off, you feel more in control and that increases your confidence.
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