Resumes, Interviewing, Getting a Job, Career Transition, Life Success

You get nervous or feel like you don't have self confidence?
The employer says "You don't have enough experience!" 
Or you have the opposite challenge, employer says "You are overqualified!"
The employer says 'we'll be in touch' but never calls back after an interview? 
You feel like you are "too old" or "too young" and this is why employers pass you up?