Still struggling with feeding

Monica
So I am still having trouble breastfeeding. I breastfeed then suppliment with formula or pumped milk. Feeding last well over and hour and it is just getting to be too much. I was so dead set on breastfeeding I feel like I've failed but have come to terms with it and am debating on switching to formula only. It ha just becoming more stressful for me and leaving the house gives me anxiety. Any one in the same boat as me?? Any advice??