If you're sure you'll be a pessimist one day does that mean you're an optimist?
No. It makes you an optimistic pessimist.
What does The pessimist sees the difficulty in every opportunity the optimist the opportunity still have them in the future mean?
Imagine a glass with water to the middle of it(half). You can say "The glass it's half full" or " The glass is half empty". Generally, if you say the 1st you are a optimist, the 2nd you are pessimist. So if you are a glass half full kind of person means you see situations in a optimist point of view.
They are basically asking if someone is choosing to be an optimist or a pessimist. If a glass is half full there are 2 ways of seeing it; as being either half empty or half full. An optimist would view it as being half empty (THATS WRONG), but a pessimist would see it as being half full (OTHER WAY AROUND) so that they can have something to complain about. Asking if a glass is half…