Stop carrying the weight of the world on your shoulders.
别太操心了,没有你地球照样转。 (carry the weight of the world on one’s shoulders:自以为重任在肩。)
I have a cat. Its name is Mimi. It's a Chinese cat. Oh, where is it? Can you find it?
我有一只小猫,名字叫Mimi,是一只中国猫。噢,它在哪儿呢?你能找到吗?