Why Look At The Good When There Is So Much Bad To Handle?

"If you look at what you have in life, You'll always have more. If you look at what you don't have in life, You'll never have enough."                                                                       - OPRAH WINFREY 

this quote isn't supposed to be labeled as motivating. Its clearly asking to accept what you have and try to forget what you don't. A friend sent me this quote when i was certainly not in a good mood. But when i thought rather calmly than being angry over it, i realized this quote is rather demotivating than motivating. 

if we certainly forget about the things we don't have and just focus on what good we have, how can we certainly label ourselves as achievers? aren't we supposed to be achieving more and more in the later time of our lives? 

People say be satisfied, be content or rather just look at the positive phases of your life. the only question my mind can think of is WHY? WHY TO LOOK AT THE GOOD WHEN THERE IS SO MUCH BAD IN YOUR LIFE ALREADY? cant we just focus on the bad and try to make it good. 

HOW TO FIND THE POSITIVISM WHEN THERE IS EVERYTHING NEGATIVE IN FRONT OF YOU?

WHY ISN'T EVERYTHING SUPPOSED TO BE NEGATIVE AND ONLY BE POSITIVE, EVEN IF THE POSITIVE IS HARMFUL AND DANGEROUS?

ISN'T THERE ANY GOOD REASON BEHIND WHY EVERYONE LOOKS AT THE BAD OR THE NEGATIVE SIDE OF ANYTHING?

WHY CANT WE JUST LEARN FROM THE NEGATIVENESS THAN BEING PUSHED DOWN OUR CAPACITIES FROM THE POSITIVENESS?

HOW CAN EVERYTHING BE BOTH POSITIVE AND NEGATIVE? ISN'T THERE ANYTHING THAT CAN ONLY BE POSITIVE OR ONLY BE NEGATIVE?

You really cant answer these questions, can you?