I did exactly as you described for a month and saw amazing results even in the first week. I wrote only 9-10 longterm goals every day -not reading previous days' notes. It also helps to clarify your goals when you write them again and again and you begin to catch some conflicts inside you.
Also please read 'It Works' by R. H. Jarrett written in 1926 (you can buy it from amazon.com but it is public domain now, so you can find some links in the internet): It Works
I guess this book is the father of every other personel development book.