what do i have to do to appeal my case for social security disability

they say I was denied because I can work .but I don't think I can because when I was working my feet was getting uclers on them where I was on them a lot ive had to wear surgical boots and I almost lost one of my toes because it got so bad my husband helps me put my shoes on everyday he takes care of me before he goes to work I don't go out much im not real good on my feet when I had to put bandages on my toes he did it cause I cant reach my feet I cant walk up small hill or my steps without getting winded or out of breath I get chest pains every so often ive got stomach issues ive got neuropathad in legs,feet hands.i have heel spurs arthritius in my feet and knees and hands my feet swell if im on them too long and if I sit too long I have hard time getting up and down I get out of breath easy