What you have to remember is that EVERYBODY makes themselves sound better on their C.V. then what they actually are in reality. That's not to say they lie about their skills, but it's a skill in itself to put a positive spin on what type of person you are and not talk about weaknesses. For instance, a job such as a retail assistant; people who get the job will talk about having great customer service skills and being helpful and friendly towards other people. But when you (as a customer) walk into that shop; how many staff actually give great customer service? In my personal experience very few; they just don't give bad customer service....
So my point is; you don't need to feel bad about putting yourself in a positive light since that is what everybody does (some better than others).