I also referred to having more to say on the subject. I'm going to use a decision-making process that's most often known as the 'Getting Things Done' method. I'm only going to describe part of it - the part where you gather all the things that you're thinking about in one place. This is because this blog post is about clearing your mind. For a full discussion, and more information, please see the gtd webpage and the wiki article on gtd.
One of the main reasons that I have sleepless nights is when I have too many things to remember. The methodology here is simple: gather all the things you have to think about into one place. Whether you write them down, record them in an e-notebook, use a dictophone, whatever, it's important to completely empty your head.
You probably have lots of things coming in from different place - emails, bills, letters from school, fliers and leaflets, adverts, conversations, even ideas that come to you at 3am. Wherever the origin of the item, create a place to gather them. This can be a physical place, such as a pinboard, or a box-file, or an online one - it doesn't matter. The important thing is that when you want to find something, you know where it will be.
This process may take a long time. Have patience.
Once you have emptied your mind, wallet or handbag and have cleared out your piles of paper, and you have gathered all your various tasks, plans and commitments into one place, your mind can finally take a breath, and calm down. You no longer have to remember all this stuff - it's recorded.
The next steps go into detail about what you do with all this stuff once you have gathered it all in once place. However, if you would like to find out about that, please follow the links above.
Thanks for reading,