I am a pessimist grown from childhood abuse, from the behavior of my mother after my parents' divorce & from her death when I was 20.
Those thought patterns were reinforced by entering nursing, a profession which educates you to think about all the ways that a patient can go bad...then plan on preventing all those ways from happening.
My marriage, for the most part, taught me not to hope after years of repeated disappointments in the same areas.
Having said all of that, I find myself 13 years into being a widow & 1 year after retiring working toward a kind of optimism. I'm able to tell myself that if X bad thing happens, I can live through it because of what I've survived. That's not exactly full-blown optimism, but at least I'm learning that if storm clouds are ahead, blue skies will eventually follow.
How about you?