Feeling like a failure. Please help

My LO is 2 weeks and 2 days and EBF and I don't want to breast feed anymore, and I hate pumping but I feel like such a failure. Especially if I switch to formula (not because of what she's eating but because of myself) I feel like I'm giving up. But I can't keep breastfeeding. It's making me depressed every time I whip out my boob I have this feeling of resentment and I don't want to have that. Help. Someone I can't stop crying and my boyfriend doesn't understand why I feel this way!? He's supportive but doesn't understand why I feel like a faliure. Also, what are some good brands of formula for newborns? That keep them from getting to gassy?