First impressions are important. Your resume is the first thing an employer sees so it has to make you stand out from all the others. Employers often receive hundreds of resumes for each job opening so to get called for an interview you don't need a good resume you need a GREAT one!
Your resume needs to be more than just a list of where you worked, it needs to stand out. If you are passing out a lot or resumes and no one is calling you, it could be your resume. No matter how good you think it is maybe it could be improved. Cover letters are also important. A lot of people have trouble writing cover letters, they don't know what to say or how to say it. We can help.