I was feeling the same way with my little guy earlier this week. All I can recommend is experiment and find what works for you. For me it was when I stopped demand feeding. If he's cranky we try a binky or distract him with playtime or go for a walk, no more comfort nursing, there are other ways I can comfort him. I'll probably get blasted on here for this, but oh well. For us, it works. If I hadn't made that change I would have quit and switched to formula. The key is to find what works for you, not to follow one parenting/feeding method exclusively just because someone (professional or family) says to.