Yes, I have it. Yes it's ok. It can help map feelings and behaviors and with setting life goals, goals that can include feelings and how you feel physically. It's more than just worksheets. Maybe see if you can find it at a library? If your pdoc and t feel this would be a direction that's beneficial for "you", then why not? I remember there's somewhere in this clients guide to cbt that mentions the basis of psychology is rational thinking.

Hope you find that it works for you!