Things are usually worst just before they improve.
物事は良くなる直前が最も悪い状態である。 (monogoto wa yokunaru chokuzengo ga mottomo warui joutai de aru)
"Keep going, it's always darkest before the dawn."
"進み続けて、夜明け前が一番暗い。" (susumi tsudzukete yoake mae ga ichiban kurai)
to ignore distractions or unpleasant thoughts
to stop a vehicle at the side of the road
to be physically fit and healthy
a sudden opportunity or good fortune
too difficult to understand or achieve
very common and not valuable