It's really important to get your personal branding right. Many actors miss out on jobs and get frustrated because they're actually auditioning for the wrong roles. If you're a 280 pound biker with tattoos all over your body, it's not likely that you'll be cast as a leading man. If you are quirky and energetic, you may not be cast in a lot of ingenue roles.
You've got to find your own brand that matches your look and personality. Take a good, hard look at yourself to see where you fit in. Enlist friends and family to help--which of these types do they see you as?