You must do what you love. I have seen too many talented people doing jobs they do not like and ending up being mediocre. So you must do what you love; if you love your job, you will work harder, and you won't feel like you are working. Also, don't give up! Never give up! I have also seen some very smart people, but their beliefs were not strong enough, and they lacked perseverance. Just when they were about to succeed, they gave up. So since you choose to do something, never give up! Don't give up halfway. — Chuan Jianguo