Are you having trouble sticking to your exercise routine? Don't feel bad -- seriously. It might just be the reason you can't follow through.

A relationship between exercise and self-confidence has been proven -- Diet Blog cites a recent study, which "showed self-efficacy alone boosted exercise adherence by 139 percent over the course of a year." That's a major increase!

So, if you're looking to boost your fitness level, maybe you should work on boosting your confidence, too. Check out the gallery for seven tips to boost your self-esteem.