Self confidence

Any tips on building my self confidence? I'm not big but I'm chunky and anytime I look in the mirror I want to cry. My husband says I crazy and he loves me just the way I am but i don't believe him. I feel like I'm so disgusting how could he love me?! I'm not trying to beg for attention which is why I'm asking anonymously and not posting pictures I just want tips on building self confidence. :/