Hey there Traysea, welcome to the forum!
I'm a bit confused as to if you're upset because you fell off the wagon for a few days or if you're just plain sick of dieting altogether. Maybe it's a bit of both?
If you're kicking yourself around because you had few bad days where you didn't eat right (or ate everything in sight...if you're like me hehe) or didn't exercise, try to remember that what you did yesterday, the day before, the week before... it's all inconsequential. You can't change it now no matter what. When I fall off my plan I often feel like, "Well, now that I've royally messed my diet up by eating that cheese steak I might as well have the banana split too." Wrong! Everyone has slip-ups and bad days. The important thing is to get back on track as soon as you realize what you've done. It doesn't matter what you did yesterday, it matters what you do today and tomorrow!!!
If you're just plain sick of dieting, well, that's more than understandable. When I lose my motivation I try to imagine myself a year from now, at the exact same size/weight that I am now, unhappy and still wanting to lose the same pounds. When I think about it like that, I realize that the only way for me to be happy is to see this thing through and stick it out; if I don't--if I give up--then I'll just be kicking myself a year from now for not sticking with my plan.
I posted this site for someone else: http://www.100-weight-loss-tips.com/
It's mostly very basic tips, advice and motivational tricks. But, it's written in a lighthearted manner and I often look over it when I'm feeling down for a chuckle and a boost.
Best of luck to you! You've been on plan for 3 months! That's an awesome start and you CAN do it!