What is A Thought?

Thoughts are mysteries of nature. And these thoughts give us happiness and worries. These are responsible how we have knowledge. A lump of thought that we remember is called memory. Memories are the reason we are here. Remembering our happy days, never forgetting our enemies, never leave our loved ones. Even when I write my blog, thoughts are responsible for it.
What if we don't have thoughts? Then we don't be having anything to worry responsibility, family, boss and no one. Then what is our state? We might one among air, water, earth or something. Does any of this make sense to live? So we need thought to live. If someone want to be with their family, to win world cup, to become a scientist they should have thought. Then it makes sense to go with your life. Thought must decide our life. This rivalry, racism, terrorism, loves and whatever things are produced by our thought.
Do we have control of our thoughts? Personality of a person depends on thought. Some are capable of being terrorists or servants or top manager. But they all might have same personality. Each one's starting point is different and they go in different direction. Their situation and opportunity make their position in life.
For example take harry potter story, Harry and Dumbledore are similar personalities. But Dumbledore cannot bring down Voldemort. It is Harry's destiny to bring down Voldemort. So situation makes people travel in different direction. If one should be happy even in his hard times, it is necessary to find his destiny. Only that keeps him/she happy till end.