Overview
Hope is an optimistic state of mind that is based on an expectation of positive outcomes with respect to events and circumstances in one's life or the world at large.
As a verb, its definitions include: "expect with confidence" and "to cherish a desire with anticipation".
Among its opposites are dejection, hopelessness, and despair.
In psychology
Professor of Psychology Barbara Fredrickson argues that hope comes into its own when crisis looms, opening us to new creative possibilities. Frederickson argues that with great need comes an unusually wide range of ideas, as well as such positive emotions as happiness and joy, courage, and empowerment, drawn from four different areas of one's self: from a cognitive, psychological, social, or physical perspective. Hopeful people are "like the little engine that could, [because] they keep telling themselves "I think I can, I think I can". Such positive thinking bears fruit when based on a realistic sense of optimism, not on a naive "false hope".
From Wikipedia (CC BY-SA 4.0).