Every home needs a facelift now and then, and replacing a front door is a simple way to make a big impact. Whether your front door is old or damaged or is just getting old and drafty, you may want to look into replacing it yourself. Replacing a front door isn't very difficult, especially if you have help. Not only do you get to flex your mad DIY skills when you replace a door yourself, but you also save yourself a lot of money in labor costs.