Sometimes it feels like climbing.

At the moment, my mental illnesses are making general life feel like hiking up Everest. Everything is overwhelming and I’m getting sick of it. I feel like I’m struggling more than ever to keep my life going while also handling my mental problems, but why? Why now? Why can’t I just feel like everyone else?
I want to be free from constant negative thoughts, yet at the same time a bit of me is still doubtful that I really am “ill enough.”
Am I severely depressed if I have moments of normality?
Am I really an anxious person if I’m less anxious than I have been at other times in my life?
Can my eating disorder be serious if I feel giant compared to everyone?
Can my eating disorder be overcome if I feel so strongly afraid of gaining weight?