I felt like this too.I really struggled with breastfeeding at first and topped up with formula. I felt that everytime she was given formula that I was failing, not because I have any negative feelings towards formula but because I felt like I couldn't provide for my child like I should be able to. I think part of it for me was because at the hospital they made me feel really bad asking for formula and wouldn't let me feed her, and I just felt like I was failing her. Even at home I couldn't feed her, OH would and I resented him at times. I managed to exclusively breastfeed at 2 months, and remember being so proud that it was marked in my red book she was exclusively breastfed. I really want to exclusively breastfeed this one at first now I am more wiser about breastfeeding.