You're either moving backwards, forwards or not at all. When you resist change it can begin to feel like a numbness. You are out of the flow. Do something to shake up your life and preferably do it for reasons that will propel you forward into better and bigger things. Resist long enough and change will be thrust upon you.
If things are changing but you still feel nothing you might want to give some serious thought to how you have coped with pain. Sometimes tremendous suppression can lead to a sense of numbness.