I've heard this said, haven't you?  

There are 365 commands, exhortations, instructions in Scripture along these lines:

Be anxious for nothing.

Don't be afraid.

Fear not, for I am with you.

An admonition a day keeps the anxiety away, right?  

God's told us, and we just have to obey! 

Spoiler alert.  Quoting a bunch of verses has not worked well for me, so far.

Part of the problem is just me:  anxiety is one of my few well-honed skill-sets.

I'm so good at anxiety, in fact, that I can get anxious about trying to follow the "don't be anxious" commands.  

It all spins into a nightmare of "I'm anxious!  I can't stop being anxious!  I'm a sinner!  God's upset with me for being a sinner!"