I’m a big believer in writing your prayers out and keeping them in a prayer journal. For me, the writing process is so very helpful. It forces to me to focus my thoughts and get specific in my praises and requests. I also journal what I’m hearing from the Lord as I study scripture.
I typically journal in one of two places. I have a program which I love for a lot of reasons called PlanPlus which gives me the ability to jot stuff down using digital ink and then it gets saved in a folder in Outlook. I can also just type stuff if I’m in a hurry. Beyond that, I use my trusty old moleskines. Sometimes there a real advantage to going low tech like this.
Whatever media you decide to use to record your thoughts, I strongly recommend journaling as you pray. It’s a very helpful tool and it will improved your prayer life if you stick with it.