In a recent survey of MAA members, 73% of the respondents listed "attracting students to the major" as a big issues that needs more attention. I will discuss some principles and specific activities that we have used to increase the number of students taking mathematics courses and becoming math majors. Some principles include exposing students to careers and opportunities available to those who study mathematics, promoting undergraduate research and internships for math majors, creating a supportive environment, and being proactive in your efforts. Along the way, I will talk about some specific activities such as our "Careers in Mathematics" seminar, a freshman/sophomore class titled "Intro to being a math major," the creation of a student advisory council that suggests ways to improve the department, our internship and undergraduate research program for math majors, and the "We Use Math" website.