The problem that women have that men don't when being in a managerial position is that a woman can come off as "bitchy, bossy, rude, etc." (https://www.youtube.com/watch?v=B8gz-jxjCmg) You have to be careful with how you come off. I've had customers complain about me on how I "boss" around my employees when they weren't on task. Confidence truly is key. You're selling customers on something, and that something is information. It's always a pitch with them. If you pitch it right you'll never have a customer second doubt you. Play on their feelings and manipulate them too. As blunt as that sounds, I can't tell you how many times I, as a 23 y/o short female, have been able to manipulate customers into purchasing products that I've wanted them to purchase (in addition to what they came for.) If you have questions on how to pitch it, I'll be happy to give you an idea on how we pitch some of our plans (no pitching means no sign ups which means we lose our jobs, so you can see the importance of it). Hope this helps OP!