Try to remember the good times and the best memories you shared with the person or pet you've lost. Focusing on negative thoughts or regrets won't change what has happened. It will just make you feel worse. Be assured that no one who has brought you happiness would ever want you to wallow in sadness. Try to remember things like the way this person talked, the small quirky mannerisms, the times that you spent laughing together and the things this person has taught you about life and yourself.  If you've lost a pet, remember the beautiful times you spent together, the happy life you gave your pet, and the special traits your pet had. Every time you feel tempted to become even more sad, angry, or self-pitying, grab a diary and write down the good things you can remember about the person or pet that has been lost. In moments of sadness, you can consult this journal for a reminder of the happiness you had. . By keeping busy and occupying yourself in tasks that require a dedicated focus, you give yourself a break from constantly ruminating over the loss. This also gives you the space to realize that there are still good things about your world.  While work or studies can provide some relief from the constant thoughts about loss, don't simply rely on your routine to distract yourself or you risk feeling that there is only work and sorrow and nothing in between. Help reacquaint yourself with happier pursuits by doing something that gives you peace. There are all sorts of possibilities, such as gardening, cooking, fishing, listening to your favorite music, walking, drawing, painting, writing, etc. Choose whatever calms you and gives you a sense of joyful achievement (not something everyday work or studies can always promise). Consider getting involved in social work. Shift your focus from your own problems to those of others. Consider volunteering as one possibility. If you like children, helping with young children who display lots of spontaneity and laughter may ease your mind. A common symptom of grief is to stay...

TL;DR in Chinese:
把注意力从悲伤的事上转移走。 转移注意力。 发现生活中的美好。 形成“概念”。 和朋友在一起。 不要强颜欢笑。 让时间治愈一切。 不要预测自己的快乐。