It's not the situation, but whether we react, or respond, to the situation that's important.
Push on, friend. You're just one exciting step from the banquet hall of life.
The elevator to success is out of order, but the stairs are always open.
You'll never see a happy ungrateful person.
To respond is positive, to react is negative.
It might interest you to know that the 1828 Noah Webster Dictionary identifies the optimist in complimentary terms, but says nothing about the pessimist. The word 'pessimist' was not in our vocabulary at that time. It's a modern 'invention' which I believe we should 'dis-invent.'