Being a nanny is no small job. It’s even more complicated when you're faced with the prospect of keeping up with the demanding competition. And there are a lot of great nannies out there! So how do you stand out in a pile of resumes or bring your career to the next level? We asked seven seasoned nannies, all of whom have more than 15 years of nannying experience, to offer up-and-comers some insight on being successful in this industry.