Try and stay positive. And maybe look at it (as I used to) every rejection is one less you'll get before you get to the ONE "you've got the job"!
It will happen, you just have to hang in there and tell yourself you are so worth it! It is hard and your confidence does take a beating, but if you allow yourself to get down about it too much, it will show on your face in the next interview, and you don't want to do that.
Remember to walk with your head held high, and SMILE like you own the world, and before you know it, YOU WILL (well almost!).
Good luck and go get em' girlfriend.
Strong people don't walk away from the truth, only the excuses others try to sell them.