I say this, seriously; a sex worker. Let her work with you to stimulate you, visually and physically. Like men, some women are clumsy at foreplay and impatient, too. Or, they expect the man to do all the 'work' and expecting him to know what she wants or likes without communicating it to him. My wife is naive about men, even in her 70's, with a string of lovers long before we met. She still believes I should be able to get it up like I did 30 years ago. I'm working on it but even when I get there, she'll probably find a reason to turn me down.
