Life is a gift given to us by someone much greater. Life wasn't given to us to be wasted. And it's time that we open our eyes. All of us have a purpose and we should fulfill this. Doing so would make lots of people happy.
Some people live their lives like they have none. They hate on people, see the negative side of things and they shut away all the wonderful things around them.
What matters are the things that we do here on earth. We shouldn't waste our lives being a pessimist. Even people who have problems much greater than the ones we have are able to smile, so we have no reason to frown. We should be more aware of all the good things around us, because all of this will someday disappear and we would regret not appreciating them.