You Think Best in Your Bedroom
In order to be able to think, you need to feel like you have some privacy and space.
It's likely that you spent a lot of time in your bedroom while you were growing up. It's your sanctuary.
You need a high level in control in your life, especially when you have something important to do.
The best thing about your room is that it's exactly the way you like it. Having things the way you want allows you to relax and think.