Do not rejoice over what has not yet happened.

Related:

• Has HELL frozen
  over yet...
• A man's ruin lies in his tongue.
  Egyptian...
• What happened in the past is over.
  Why can't you forget it...
• This is an unprecedented incident but we do know it
  has happened before...
• Horrible bug encountered. God knows what has happened!
  WindowError:...
• What worth has beauty if it be not
  seen? --...
• One day at a time- this is enough. Do not look back and grieve over the past,
  for it is gone; and do not be troubled about the future...
• What you give you get, ten times over.
  Yoruba...
• This is the day that the Lord has made; I will rejoice and be glad in it!
  Psalm 118...