Can do?
GTD is a task management framework that lets you handle not only the work that demands your full, intense focus, but also the small stuff of everyday life, all in one place.
Most task management systems ask you to plan your work top-down. You're told to set a grand vision, then create work by laying out goals and detailed plans to achieve it. But much of the work we actually do doesn't come from the top down. It often arises suddenly, from the bottom up. Think of an unexpected problem at work, or a household chore that suddenly becomes urgent.
GTD is the best-known task management framework that can handle this kind of unexpected, bottom-up work. It's also been around a long time, which means it has been well tested. And there are very few frameworks that can manage your work as a whole the way GTD does.
GTD isn't something you master in a short time. Like driving, it takes steady practice. But there are also quite a few philosophies and skills in it that are easy to apply and pay off quickly. If GTD lets you do the same work with less stress, it will be a big help with the countless things you'll get done in the future.
If you want to learn about GTD in detail, you can read 
the GTD book. But the book isn't especially friendly, so you may get lost. I think it helps to get the big picture from the following video first, then read the book.
Is GTD Really That Good?
GTD may look complicated at first, but it really is good.
I use GTD well in everyday life and at work.
If it feels hard to use or a hassle, you can just take the parts that benefit you.
For its effects, see The Effects of GTD.