Relax!Take it easy!Give it a rest!
Go easy!Take a deep breath.Slow down.
Control yourself!Chill out!Loosen up!
Simmer downJust drop it.Just let it go.
Just take a breath.Count to 10Steady on!
Take a chill pill!How about a big hug.Hold your horses (Slang)
Keep your shirt on (slang)Want to squeeze my hand?Let’s focus on fixing the problem together.
    I see that you are mad, how does that feel in your body?If you need to hit something, hit this pillow.That can be so frustrating, let’s figure this out together.
I see that you are having a difficult time, let me help you.If you are feeling sad, you can tell me about it.