I am taking the “When something sucks” class and one of the questions is “Why am I choosing to believe this?” In my private coaching sessions, I never know how to answer this question. See below

C:Covid
T: If I get COVID, my chronic illness will get worse
F: Fear

When I ask myself the question “Why am I choosing to think this?” all I can think of is “because I think it is true”.

HELP! In all my models, I struggle to solve how to answer these questions.

THANK YOU IN ADVANCE