It might seem like an easy fix to just fix the door yourself, but this has more than one drawback. Firstly – it is a safety hazard, and not just for you where the door could fall on you or because you can be shocked, but also because you might just be messing with the wrong problem. It is also a fairly unreliable fix. So, do yourself a favour, and hire a professional, because it will be cost-effective and time-effective too, because you do not have to do it again and again. You are a bit ignorant at the whole process, while others have the expertise.