I have been doing this all week.
I have noticed such a difference too. I actually manifested 2 different ''situations'' in the past 2 days that at first were just a thought..or wish i then wrote them down..as if they were part of my day ahead and it worked!!!!!
I did start with writing down all i am Grateful for (Gratitude Journal) as i always do but i then wrote out exactly what i wanted to happen during the day, exactly the way i wanted it to happen and in both cases, they really did manifest almost exactly the way i saw it .....so much FUN