Anticipation

I'm like a kid, it's ridiculous.  When a big event is approaching, I get so excited!  Whether it's a vacation, a trip to see family or family is coming to see us, a new job or a party, I cannot contain myself.  I start waking up way before my alarm goes off.  I am nauseous constantly.  I'm a mess.  Thankfully I've found ways to help tame these reactions or whatever you'd like to call them.  Though I would love to find a way to make them go away.  Any suggestions?