An arrow can only be shot by pulling it backwards. When life is dragging you back with difficulties, it means its going to launch you into something great. So just focus and keep aiming. Tiny arrow for rib placement
Well there are a couple of possibilities. The first, one can translate it just as you asked: fortitudo e dolore venit "strength comes from/out of pain" But if you want to simplify it, one can just use: fortitudo per dolorem "Strength through pain"