I also like "Still faster than the guy on the couch" and "Last > DNF > DNS" very much myself.
Someone on the Lose It forum had a t-shirt done with something I thought was pretty good: "If I stop now, how will I get back home?"
And one simple one that gets me going, but it's based on how much I like the narration behind
this video, is a simple "Rise and shine"...
FM