Trying to get off this plateau

In my last post I had said, "I've hit a plateau. After 13 consecutive weeks of losing weight, down almost 40 lbs [18 kg] in three months, I've been stuck at the same level (more or less) for two weeks now". Here it is in graphical form.

The dots are the actual weight. The solid line is some sort of trend line (that I can't get rid of from the chart). I'm hoping that a renewed effort of not overeating, and some extra stair climbing and extra walking will enable me to get back under 360 lbs (163 kg). 

I was talking to a friend recently about the idea that you have to eat everything on your plate, and the psychology behind that. I was saying that in my dad's generation (my dad was born and raised in England just after WWII) there was still food rationing. Sugar was restricted to 8 oz per week until September 1953 (https://en.wikipedia.org/wiki/Rationing_in_the_United_Kingdom), nine years after World War II ended! I grew up in the 1970s, long after food rationing had ended, but in an era when our parents would say things like, "There are starving kids in Africa who would do anything to eat your leftovers".