My car just got wrecked, it's not the happiest day of my life.
我的车刚坏掉了,今天真不好过。
You (or One) cannot make a silk purse out of a sow's ear.
粗瓷碗雕不出细花来。
I even went out at midnight with a torch and noted with satisfaction (and surprise) that the ants were still swarming around the sticky tape without being able to do anything about it.