Your health and happiness are more important than your commitments. Your problems are valid even if they're not as bad as what is going on in the rest of the world. Let's look at this rationally. It's okay to show that you're grieving, hurt, upset. You can only do so much. You need help. At some point, you have to put yourself before others.
But I'm really just a liar.
While I know these things to be true, I don't believe any of them.
It's so much easier to tell others how to be than to change what my own head believes.