"There is nothing either good or bad, but thinking makes it so." - From Shakespeare's Hamlet
I think about that quote a lot. Everything has many, many effects and side effects.
Things happen. Then we assign value to them. Sometimes our assigned values are wrong, as we see later. The worst moment of your life leads to breakthroughs. The large gains lead to arrogance and ruin you.
Nothing good or bad? Maybe a stretch. Worth thinking about, though.