The sutta that describes how little suffering there is

I remember reading a sutta where the Buddha compares how much suffering there is, or grief or pain or whatever, as if it were a grain of sand, or a bit of dirt on the ground, compared to all the grains of sand in the ganges river or all the mud or something kind of quantitative imagery like that. I think his point was a bit like that of the metaphor of the Second Arrow; that there might well be some kind of pain, but then all the rest of the torment is fabricated by the deluded mind through reactivity-obsession or passion-obsession and whatnot. This sutta didn't quote that one, but it had the same tenor: 'you won't believe how little there is to worry about.' I've tried googling for this sutta but I can't find it.