(憂喜參半)....(英文)

bittersweet
[Webster]
being at once bitter and sweet; especially pleasant but including or marked by elements of suffering or regret
A: I've had a bittersweet day today.
B: Why?
A: Well, the result I got from the shooting range today was the worst in six months. But luckily I still have a .45 at home to console me!!
(I don't understand what kind of 成績 you would get from a 槍靶廠, so I've changed it to 練靶場 in the translation.)