First of all, stop that thinking this instant. Sex is meant to be fun and pleasurable, you're not trying to pass the Bar exam. So if you're experiencing low self-esteem, do something that makes you feel confident. Whether that be buying lingerie for yourself or hitting up a sexy workout class -- or any workout class for that matter. Research shows that regular exercise boosts mood and self-esteem.

Another option? Cavanah says attending sex workshops like her Art of the Blow Job Workshop is a great way to increase confidence in the bedroom. "While we do teach techniques, the core of the workshop is about building confidence," Cavanah says. Attending similar workshops can help you learn about feel-good points, different bodies and how they work from a pleasure standpoint. "Taking time as an adult to seek out that knowledge will make you a better partner in many ways."