Both Uses

pessimistic
in
Learning to See - One Writer's Beginnings - Chpt 2
(Auto-generated)

You're a good deal of a pessimist, sweetheart.†
*

pessimist = someone who expects the worst; or who focuses on the bad part of things
And yet I was well aware as I stood between them with the water running over my toes, he the optimist was the one who was prepared for the worst, and she the pessimist was the daredevil: he the one who on our trip carried chains and a coil of rope and an ax all upstairs to our hotel bedroom every night in case of fire, and she the one—before I was born—when there was a fire, had broken loose from all hands and run back—on crutches, too—into the burning house to rescue her set of Dickens which she flung, all twenty-four volumes, from thewindow before she jumped out after them, all for Daddy to catch.†

Definitions:

(1) (pessimistic)
expecting that things will turn out badly; or focusing on the bad part of things
(2) (meaning too rare to warrant focus)