I think there is a difference between feeling discouraged and having a "pity party".
I've always considered a pity party to be when you blame everyone and everything else for what is going wrong in your life and refusing to take any responsibility yourself.
Feeling discouraged, however, still sees utside influences, but also acknowledges what we ourselves have done and can do to make things better.
Pity parties are giving up, discouragement is taking a step back a deep breath and plunging in again.