Yes, your thesis statement will set out the topics for the supporting paragraphs. "I am motivated to pursue a career in medicine because X, Y, and Z. Then the first body paragraph talks about X, the second about Y, and so on.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.