Just do it...

As my good friend says, "If you aren't living on the edge, you're taking up too much room".

Travel the world
Change jobs
Meet new people
Exercise
Learn to cook
Take some photos
Make someone a special gift
Buy a new car
Spend time with your family
Do some extreme sports

Do something different. You will never know where it will take you and really who cares? it's all about the adventure right?