We examine whether college students' persistence in finding a suitable major field of study influences the likelihood of graduation. We find that students who make an effort to select a suitable major early in their college careers graduate in a more timely fashion. Although changing majors is associated with delayed graduation, struggling students can improve graduation likelihood by switching to a more suitable major. However, performance improvement after switching is necessary for successful completion of a degree. These results indicate that colleges and universities should allocate resources to supporting students in their search for an appropriate major and empower students by providing course guidance and counseling.