I found this Website/Blog have a meaningful article. Click here for full version (in Chinese). I pick few of the words from it to share with you here.
1, The reason of your pain, lies in the pursue wrong thing
15, When you joyful, you must think that, this joyful is not eternal. When you’re pain,You must think,This pain is not eternal
18, You may have the love, but do not have rigid, because the separation is inevitable
If you wish to learn more, kindly proceed to the link above. Have a nice day.