Why am I so optimistic?

• When one has hit bottom, ideally, there is nowhere to go but up.
• You would be optimistic if you had the friends that I have.
• He is a smart boy, but kinda retarded. I never doubted that it would take him a while before he realizes that he loves me.
• A psychic told me that I would live into my 80s. When my baby cousin sent me a cursed chain letter the following week, nothing happened. That old lady must have been right. I have nothing to worry about.
• The Beach Boys' Sounds of Summer is the most played album on my iPod. Even if I wanted to be pessimistic, Brian Wilson will not let me.