As a follower of Jesus who also has a propensity to overthink, this is something that I have to bring to Him daily. I will say, however, that anxiety attacks often stem from worry that we are either unaware that we have, or, have not been honest with ourselves or God about. I’ve only had three full-blown anxiety attacks in my life, but they seemed to come when I felt great & was not in a space of living inside my head. One began as soon as I woke up--I could feel deep, physical pain in my heart, my body shook, & I felt like I was going to throw up. I couldn’t, for the life of me, figure out where it was coming from. And so, I prayed. And prayed. And prayed. I think the commandment is there because the human condition will always struggle with worry--those who say that they never do are not being honest with themselves. (Although some struggle more than most). However, being aware of this and constantly laying it at the Cross is what allows it to dissipate.