I don't know that life could be so hard. It does and it is happening. You know when I was yelling at my self and said 'I am not good enough, I am not pretty enough, I am not smart enough like any other of my friends.' I was angry and upset. Why she could be so flawless when I couldn't be like her? Then I look down and seeing other people who can't sleep in comfy bed or eat tasty foods. Then why can't I take all the pleasure that God already gave me? At least I have two hands and two legs when anybody else have to cut off their legs because of accident. I was being pitiable, selfish, and foolish. I never look at a mirror and see that perfections.
I always think as if I were the only person who never feel happy. But look? Everyone can be happy by their flaws. It is okay to have flaws and being disable, because everyone is beautiful in their own ways.
Life may be unfair, life may be cruel for some reasons you see it with your half sight. But.. you have to know that God always fair to you and everybody else in this world. So please do not waste your time by complaining your perfections, because you are already perfect and beautiful. Being beautiful is not always seen in physically, but also mentally and spritually.
Life is beautiful when you are grateful for every second that you passed, you need to remember that. Because people come and go, but memories stay long forever.