No matter whether you've made a mistake or whether you're pulling up some old and crumbling floorboards, you're probably going to have to pull nails up at some point in your DIY career. But depending on the position and the angle of the nail, this can be pretty difficult. It doesn't have to be, though. Most of the time a hammer just needs a little extra leverage, which is where a screwdriver can come into play.
By placing a screwdriver underneath your hammer, you have extra leverage to pull up the nail and remove it in seconds. It really does make a difference, and can save you a lot of time.