Why study Psychology?

In my 12 years of teaching this has perhaps been the most frequently asked question. 

Why should we study Psychology? 

How will we use this "subject"? What career options will we have? Is it easy to score a good grade in this subject?

I have created this blog to answer these questions as succinctly as possible and also provide curriculum assistance to teachers and students dealing with the the Cambridge Assessment International Education syllabus 9990 for examination from June 2017 on wards.