It actually could be age, your metabolism is probably slowing down.
Make during 2 weeks or longer a list what you do and what you eat when you do not eat any breakfast eat breakfast and do not eat anything after 21:00 and walk more.
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.