No hill for a stepper

[nupcmaven]

I know the meaning of the phrase, where does it come from? Anything to do with high stepping horses? Or is it from smartly stepping soldiers? Or is it something else?

[Quizmonster]

Certainly, a 'stepper' was the name given to a horse with good paces and a showy action...the sort of thing you might see at an equestrian/dressage display. So, given that the saying seems to mean that a problem is easily overcome if you set your mind to it, it seems most likely that the 'horsey' explanation is best.