how to say hello to others? how can I say hello to others and answer them more authentic?

the seesaw Life, just like in the seesaw to walk, always from the lower the head began to walk, every step, the next step will be more difficult ... ... More walking uphill, more difficult to find the balance ... ... When you think you are becoming more and more high, actually you already started to go downhill. Then you found, you never to stand you see highs. Backwards and forwards for many times, you will stand on high point is how difficult, because you always find the balance point! Finally one day, you feel : only you find life balance point, is the highest ... ... If you want to stand high, there's another way ... ... There is a man in a seesaw lower support you, maybe the family love, or are you kill the enemy.