Struggling with Chronic Illness: Coping and Acceptance

I've been really struggling trying to figure out, both with the stress of just trying to figure out who I am and trying to make it day by day, where I fit in as someone dealing with chronic illness. Every day I get a little worse and with that looming over me, the inevitability of what seems to be a neverending downward slope, I'm curious what everyone else does to really cope with and make peace with that. The reality of being sick, even though I've been like this for years, is still hard to accept