Psychology- The guide to the mind-

The study of the mind and behavior is called psychology. It includes everything that determines how people think, act, and feel, including biological influences, societal forces, and environmental circumstances.
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Since this topic and branch seems interesting to me I thought of converting it into a book, one that could guide me and you all. I, myself am learning about psychology as a hobby so I apologise if anything here is wrong. ( I source all the info here from websites that I will credit ). So shall we begin our journey?

(The cover does not belong to me- Credits to the owner )