Purple, it's really very nonintrusive, and a form of hypnosis. But it's suggestibility that you embrace consciously.
EMDR is eye movement and usually the T waves his hand or a few fingers in front of your eyes to gain a type of hypnosis.

The EFT (emotional freedom tapping) is similar. The tapping can be as simple as the T tapping on his desk while sharing a good response for you in a certain situation...such as when you are anxious, and he says while tapping that you will be able to calm yourself by breathing properly and thinking calming thoughts. Then, when you are anxious, you can tap your hand or table or car seat or whatever and the good suggestions the T made will become real to you and you will find yourself calming yourself.

That's a basic example. It's nothing to fear. You probably will feel a bit silly or anxious about beginning it and tell the T so, even if you giggle or cry with anxiety... let the T know. This can be a good thing for you!