I too have engaged in a lot of pessimistic thinking in my days, imagining worst case scenarios. Unfortunately, I think that is in part, what got me to this point in my life. It is not healthy to think like that consistently. It became a drag on my W and my R, and made me act in ways inconsistent with who I really am, and who I want to be. I am currently reading a book titled Self Esteem - I checked it out from the library. I have found it really helpful with managing negative thoughts through specific strategies, and identifying cognitive distortions and finding ways to fight them. You might want to check it out.
W 34 Me 42 Married 7 years together 8 0 kids 1 beloved dog BD 4/6/2018 I moved out 4/7/2018 I moved back in alone 8/05/2018 I file 3/06/2019 D official 5/7/2019