My mantra-in-testing right now is "Seek Pain." It's a reminder to always try to be doing something that is hard or causes you anxiety or stress, to make you better, so that the next level skills will come sooner and faster. So, do something until it becomes a habit, and then it won't be nearly as scary, and the harder thing won't appear insurmountable anymore.
Today I realized that I've been living my life in near-constant low-level anxiety for more than a month, and I haven't felt this good in a while.
So, to the world: You can't do anything to me that I'm not already doing to myself.