In times of unhappiness, anxiety or sickness, there is no doubt that a hearty laugh is a kind of medicine .Is is one of the things that all human beings share in common, it is also one of those unique phenomena that appear to set us apart from animals.

   Laughter begins when we are very young , we can observe that even young babies laugh, and there are few sounds lovelier than the happy sound of a baby laughing, as we grow up, laughter becomes a way in which we bond together throughout life, later as we get older it becomes a way that help to release stress and to escape from the grim side of life, this makes me very sure that laughter is very important to human being and it is the main source of positive emotions, it enables people to look upon the future with courage and hope ,whereas if their thoughts are sad  their troubles are sure to increase . So the joys of laugh is necessary and needs to be practiced even alone, just as a sort of different type of medication that is a way for pleasure.

   Laughter affects the body on the physical level, it expands the chest and strengthen lungs. It can be used as a therapy in healing illnesses, especially in children by encouraging them to laugh freely . It provides a physiological , emotional and psychological benefits to the laughing party. Also it can be used as a therapeutic tool for coping  with personal, social and emotional problems,it instills confidence in relationships and can be particularly used by health care professionals, it doesn't really solve any problem  but it makes things more acceptable for awhile. When person laughs the world will laugh with and when he Cries he Cries alone.

A cheerful man who can make people laugh is welcomed everywhere but no one wishes to be visited by a man who never laughs and talks only of miserable things. When i feel down in dumps and discouraged i can  put  humorous movie and laugh. I`d love to learn how it makes the world laugh  so that i might make others laugh too .

   Laughter brings joy to the world but when we laugh we should laugh at the right thing, at the right moments without hurting others feelings.

1) Remember that punctuation marks go immediately after the word and then the space goes after the puncutation mark. You have often put the space BEFORE the punctuation mark.

2) You have several run-on sentences that need to be broken into separate sentences. This paragraph below should be at least five setentence, if not more. There are other places when you have just two sentences, but they are joined incorrectly with a comma instead of making them distinct.

  Laughter begins when we are very young , we can observe that even young babies laugh, and there are few sounds lovelier than the happy sound of a baby laughing, as we grow up, laughter becomes a way in which we bond together throughout life, later as we get older it becomes a way that help to release stress and to escape from the grim side of life, this makes me very sure that laughter is very important to human being and it is the main source of positive emotions, it enables people to look upon the future with courage and hope ,whereas if their thoughts are sad  their troubles are sure to increase .

3) Be careful with little things: "he Cries" -- the C should not be capitalized, and "Is is" instead of "It is"

4) The ending is abrupt. You have said all these great things about laughter, then you say "don't laugh at the wrong things." The paragraph before that is a better one to end on. I would just delete that last one.