How do you psych yourself up to ask for a raise?

"Think of negotiating as a muscle. The more you flex it, the better you’ll be. Plenty of women have asked the same questions and have been in the same situations. Reach out to a mentor on LinkedIn. Do an Advanced People Search to find a professional woman in your field. Send her an InMail request and ask her to pass along her words of wisdom. You don’t need to divulge numbers and other personal details, but it’s extremely valuable to understand how a current employee was able to successfully negotiate with a company. Was she able to negotiate a signing bonus, salary, flex-working, or vacation? Having someone in your corner will help boost your self-esteem and remove the fear from negotiation."