How many times have you laid there while your partner is eating you like a Chinese buffet only to get super close to coming and lose it? (Raises hand.)

It could be due to primary orgasmia, a condition that prevents women from having an orgasm. According to Millheiser, women who experience this have a similar profile. Usually she's type A and in her early 20s. For these women, they can experience the pleasurable buildup but lose it out of the blue. "They're usually young (but not always) and otherwise healthy," Millheiser says. "Often times it's a mental situation they're not allowing themselves to go over that hill. It can be fear of the unknown or loss of control." Again, Millheiser says practicing mindfulness is a great way to overcome this sexual speed bump. So focus on your partner's breathing. Once they direct the attention to you, focus on the sensations happening in your body.

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."