1000 places

I was advised today to keep a daily journal entry when I am feeling my mind race in 1,000 different directions.  I have to say, while I can be in 1,000 different places in my mind, I can also be current and involved in what I am doing.  The journal will hopefully track my never ending thoughts.  I am not sure because once I start writing (which I used to do but stopped), I am sure I will be thinking about what I could have written along with what I did write.  Hmm, that would make my mind in 1,001 places.  I am frustrated.