I know what you mean about the lying thing. Bear in mind that you're not really lying, even though it might feel like it. You're just putting the best possible spin on your skills. It makes it a little easier for me if I pretend that instead of the interview being for me, I'm actually there as a character reference for a friend (who coincidentally happens to have the exact same education, knowledge, skills, and experience as me) and I'm just doing my best to help them get the job.
Also, take it easy after each of your interviews as much as you can. They take a lot out of you emotionally and physically, especially having a bunch of them in a row. Treat yourself to ice cream or something on your way home. Best of luck.