Anytime I set a boundary via text or email, no matter how rational and important that boundary may be, I get insanely anxious waiting for a response. Pretty much I sit around anticipating being kicked out on the curb like the trash k feel like I am. 

I tell myself outloud that (in this current situation) I am ok to set this boundary. This is an understandable boundary. That I'm not asking for too much, etc. Yet still the anxiety wrecks me. I'm waiting for a verbal attack and to make things awkward. 

Besides mindfulness, what are some things that go you get through the anxiety of setting a boundary?