People born, live and die and during this life period they pass through diverse kind of stages. Every stage of life has unique hapiness however, i am the one that agree with the idea that childhood is the happiest time of a person's life because of several reasons such as during the childhood people feel no responsibility to anythhing, they feel secure and the relations in that time of period are pure.

The first reason as to why i believe that childhood is the happiest time of a person's life is that people feel no responsibility to anything. During our life time, in business life, in family life or when we get old the prevailing factor that affects us negatively is responsibility. However, childhood is the only time of period that we feel otherwise. If we need to give an explanatory example to this point of view, while i am a child, i spent all my day just think about plays and games and nothing more but now it is impossible to live in that way.

The second reason as to why i believe that childhood is the happiest time of a person's life is that during that time of period people feel secure. Family try to think everything for you and yo do not need to care about security of yourself and this feeling that gives you a relief. In this point all you need to do is focusing your extraordinary imaginary world. For instances, i am sure it is a common feeling that you try to do whatever you want while you are a child because you know that if something is getting worse you are sure that your family will save you from that situation.

And the third reason as to why i believe that childhood is a happiest time of a person's life is the ralations that you are involved are absoultly pure. Because of pure feelings that you and people that you meet have, relations are not like the ones in your future. I know a lot of people, and i am the one of them, who still meet with friends from early ages of him or her childhood. For example, my homemate and me have being friends nearly 20 years and i am just at 25.

In a conclusion, think about you and imagine that there is a place that you have no responsibilities, no need to think about security of yourself and everybody including you feels positively and purely; it is your childhood.

FEEDBACK
This is a much better attempt. The grammatical mistakes you have made a fewer than those in your first essay and the overall use of structures and organization is much better. If you write such an essay in the real exam you could expect to get a score of 3.5-4 points. (I would still wourk on extending your examples though)