When you are cold is there any way to trick your mind into thinking you are hot so your body doesn't shiver?

Learn to Hypnotize yourself. You can also learn to use Cognitive therapy. You try to reverse your brain, but it takes practice. Also Yoga is a helper on this one. Most humans don't have the time to take out of their busy schedule to really practice controlling their mind, but it can be done. For now, start layering your clothing so you can put it on or take it off to accommodate your body temp.