Track-Bridge Interaction on High-Speed Railways: Selected and revised papers from the Workshop on Track-Bridge Interaction on High-Speed Railways, Porto, Portugal, 15–16 October, 2007

It ain’t over till it’s over. End relationships that no longer work for you, as you could be spending time in a dead end. Rather head for more meaningful things. You could be missing opportunities while you’re stuck in a meaningless rut, trying to breathe life into something that is long gone.