I maintain hope, which is neither optimistic nor pessimistic.
The statements that "sound" good but are not good are great places to let "hope" take root and destroy the one life you are ever going to have. The only time it is ok to "hope" is when it is logical to do it. I would say that time is when you have no other options open but to "hope", where that hope is the only reason you are able to maintian your existence on this earth. Keep in mind that this is an extreme and you will almost always have options open other than "hoping".