"Recently, I have been been thinking crazy. As we (all) know the theories of conservation of mass and energy of conservation in the world, so I HAVE came up with a crazy idea. That is life is life of conservation. The body (or your body) is just a carrier for life, and life will never out of bady. Life has already existed in the world. Do more good things so that you will not become an animal IN YOUR next life !!haha" I reworded a little bit to make it more natural.

What you say is interesting, but could be just a starting point for a physical theory, as experiments' results are needed to corroborate it; or would you classify your thought as belonging to the philosophical realm ?

what is the question? Btw you cant say I have a crazy thinking. You can say I have a crazy idea or I have a crazy way of thinking.

Where is your question? Reincarnation is a concept fundamental to many philosophers and central to many religions. It is not a new concept.

I only agree with the title.