In a nutshell, the Choices Method gives you the possibility to change the negative reaction you are experiencing, maybe against your better judgment, into the reaction YOU CHOOSE to have. It might be purely physical (I choose to release the pain) or it might be a thought pattern (I choose to feel calm about this). 

The possibilities are as endless as your thoughts are...

If you want to know more, the best is to read this article from Dr. Patricia Carrington, creator of the EFT Choices Method.