You did it. You went out and found (and landed) a new job. Congrats! It probably wasn't easy and you should feel relieved and proud — but there's one more big thing you have to do before you celebrate: quit.
In some ways, giving notice is scarier than interviewing. You might imagine going out in a blaze of glory — telling off your jerk boss, or pulling a Devil Wear's Prada and simply walk out. But not so fast. This isn't the time to burn bridges.