The Moment

I can't remember there being a time where I "lived in the moment".  Truthfully I don't think I know how to.  How can you be excited about what is happening RIGHT NOW...when there is so much fear about the future?  Everyone wants this picture perfect life, but we all know it doesn't exist.  When life isn't what I want it to be I start asking myself what did I do to deserve this?  Is this Karma?  Nothing ever comes easy and that will never change.  If things are going well how can you not say to yourself  "this is to good to be true"?  How do you live in the moment when you know the moment won't last forever.  Is this "moment" the calm before the storm?  If so what will happen when the storm passes?