Hope for the best, but prepare for the worst. This statement means a lot. It's simple meaning is to be optimistic but ready for hard times as well, to expect for the best result but also being prepared with options in case it is the worst one possible.

Keeping hope always gives you strength and courage about the future. Keeping hope makes people live life when before they just existed. It's just fifty-fifty you have no idea about the future plans and the twists coming up in your life, will it be positive or negative.