my life are so hard

Life is hard. You already knew that, I'm guessing. But life is not impossible. And life is wonderful—ultimately. But, still, it is hard—and evolutionary psychology can help us understand 

From the evolutionary perspective, organisms that passed the test of natural selection are those that had ancestors with qualities that facilitated their own survival and reproduction. To a large extent, all organisms evolved with a suite of physical and behavioral qualities that primarily benefit themselves. This is why you are motivated to eat when you are hungry—this basic drive benefits you and helps you survive. Hunger is a basic adaptation that works similarly in all of us. Our psychology includes a host of processes and drives such as hunger that primarily benefit ourselves.

so hard

g

so sweet 

No one likes to be called a hypocrite. It's an insult—in all contexts. It's like being told, "You stink! You did X but you said Y and we all saw it. Ha-ha—we got you!" But as Kurzban (2011) famously pointed out, we've all got the tendency in us to be hypocritical. It's not like there are the bad people in the world—the hypocrites—and then the good ones, who are never at all hypocritical. That's not at all how things work.