Crying a lot, depressed, I don’t know myself

Today was my first day without coffee or tea (after over 10 years of addiction). I did have a small piece of chocolate to be transparent. However I have been crying all day and barely did anything all day. I did some laundry in the morning and went to run a couple quick errands, but other than that I was in bed and watching YouTube mostly. I am really hoping this is temporary. I don’t know what the boundary is. Like is this normal and it will pass? I can’t even tell if it’s worth it because I’ve had some positive changes, but I am scared about how much I’m changing and how depressed I feel. I don’t feel like myself and I’ve been isolating myself because I don’t want other people to be disturbed by me. I feel like all of my relationships are surface level. Like I don’t know me and no one else knows me. I’m worried I’m going insane.