I'm alot like you, only worse sometimes. I'm one of those people who is never really comfortable wherever I am, and I always wish I was somewhere else doing something else. I don't know how many times I've said "I would give anything to be back in high school," and "I wish this day was over."
Then my dad, who has never said anything remotely inspirational or emotional or thought-provoking said to me, "Be careful, if you wish away tomorrow, then soon you'll be wishing away a week, and then a month. Before you know it, you'll be thirty and you will have wished your life away. Just live in today, not yesterday and not tomorrow. Things will happen."
Since then I've concentrated on making the most out of each hour I'm awake. It worls pretty well.