It's the norm to always be "well", to always be "okay" but in all honesty, who is? Is there anyone who is okay, all the time?
No.
Bevause you don't need to be.
You really don't.
You are allowed to have a bad day, or week. There doesn't need to be a reason.
Sometimes there is, sometimes bad things happen and you are allowed to be upset for as long as you need to be. And sometimes, you just feel upset for no reason and guess what? That's okay!
It's important to let yourself feel things, even when they're bad feelings. Give yourself time to feel, to reflect on the bad. Give yourself time to figure out what you're going to do. When you're feeling well, find some strategies that might help during the downs. You don't need to be alone either, it's okay to talk about your feelings, good and bad.
It's okay to not be okay.