Psychological affects of the slope

I’ve been on a (much needed) diet since mid January. While my progress is going really well, I was looking at the graph I’d made and was surprised how much my attitude changed when I simply changed the ratio of one axis. I have been working in stats for ~20 years and I’m well aware of how people purposely try and lie/mislead with graphs so I didn’t think changing the ratio would affect my mood but damn was I wrong!

In the below two graphs they both have the exact same slope & R-square however, the one the left is wider (making it seem like my weight-loss is going slower), than the one on the right.

Which graph would you rather be using to see your progress? And, yes, I know I truncated the graph at 180. While weight is a “scale” variable (excuse the pun) I have an ideal weight I’m aiming for. Besides, nobody wan’ts to see me at 100 lbs.

Psychological affects of the slope