I used to just deal with it. Maybe try to sleep. Try to breath. One thing that helped was figuring out what I'd need to hear, forming it into a positive affirmation, and then using it as a mantra. For example, if i felt i was losing control I'd repeat "I am in calm and in control". If you repeat it enough times your brain starts to accept it.
Now adays I just smoke more weed. I seem to know something while high that i don't while sober. I couldn't tell you right now what it is because I'm not high, but that guy has it all figured out.