刚才看到你有两个求助,可是是一个问题,那我就给你写一个回复吧.这样,以后你告诉我这是什么级别的作文,是高中还是大学?
先分析下作文意图,可以写的很多.可以写大概两段,每段的字数不必太多,分别描述题目中的要求（第二个和第三个合并）,并且进行适当发挥.结尾收尾不好写,给你做参考.
The meaning of a happy life may reveal in many aspects, for me, it is something that I can pursuit, something that around me, companies me through my life.
As a student, my happiness is the ease of school life. I like to play with my friend, to study with my classmates, and be in harmony with them. Outside the class, I often play basketball, doing other sports as well. It always brings me happiness when singing with the classmates during spare time, however, the heavy burden of the study often takes up my time in caring my lovely pets.
For the happiness in my dream, a great job would be of significant importance. I hope that I can have a house with a garden, where I can relax my tension. When I come back from work, I can see my achievement, knowing that I am living for something, pursuing my dream, and sharing my success with my parents, and I believe, that these are the real happiness. In order to achieve the dream, I will definitely devote myself to study without hesitation, I will wait, and keep work till the day come true.
Wrapping up my thoughts, it is in my belief, that the real happiness lies in our mind, lies around us. And, it is a good thing that we have a hope, a better tomorrow.
如果是高中作文,可能比较长了,可以参考地删除几句话.我也不是老师,具体情况问问你们任课教师吧.