A couple of brief comments.

Originally Posted by
a_k_m
The happiest period of a person's life is the childhood. In the child hood things looked different. No doubt that we don't look to many aspects of the life through the same prospective that the children do. Therefore, in my opinion, that what makes the childhood so unique and so different. Friendship, family and wealth all these words have special definitions in the childhood dictionary.
Don't use the before childhood. Say:The happiest period of a person's life is childhood.

Originally Posted by
a_k_m
When I used to be a child I never had a long-lasted envy or agony against any other child, neither had the other children. We were all kids innocently playing together going to school together. If we had some troubles with each other it doesn't take too long tell we come back playing and forgetting what really happed. I'm not saying that we don't have friends anymore, it's a case of childhood innocence.
Say:When I was a child....

Originally Posted by
a_k_m
Connections between family members in this period are as solid as they could be. All the family members live under on ceiling inside one lovely home. Every morning I would see my mother’s beautiful face, which I rarely see it nowadays. It's true that fathers were the toughest on us. However, when someone grows up he or she realize then how lucky they were to have a father.
Say:...are as solid as they can be.
how lucky they were to have had a father.

Originally Posted by
a_k_m
At any age money is the dilemma, or let's say financial issues. The child is clean-minded about this point. Thanks to the parents who had been struggling to make us happy all the time. This problem gets bigger as the child gets older and starts thinking of methods to get at least adequate money for living.

Originally Posted by
a_k_m
For these reasons I can tell that there isn't such a great life as the childhood. Friendship and family coherence and more many factors reach their pinnacles at this duration making it the happiest and the best time ever in ones life.
Life is never better than when you are a child, because you have no worries then.