If you think only about what you want to do and never about how you're going to do it, you're not really planning. It's all too easy for good ideas to go unrealized simply because you didn't have the right tools to keep you organized and remind you what you need to do.
There has been a lot of discussion over the years about how to "get things done." Books have been written. Seminars have been created. And dozens of tools have been made available for you to use. Here are two things to think about:
1. Your tools should go with you everywhere, every time. That usually means a web app and mobile apps. When you're deciding on a tool, make sure it can go where you go. And try it in places where you usually work. Do the different platforms sync properly? Is it beautiful and easy to use?
You can't use a desktop application or web app exclusively — especially if you live a life that's on the go. Dig around a little bit and make sure the tool you're going to use is something you can rely on every day. You're going to need it.