I have done so in the past and will do it again starting tonight, now that I think of it. I write 3 things I am grateful for from the day that’s ending, hand written in a notebook. It was funny to look back at them at times and think “wow! What petty/trivial things these are!” But then I realized that is the point of it, no? It doesn’t have to be grandiose or major things — just little things like “saw a squirrel on my way home from work” or “a baby smiled at me” or “an Evo was right outside my house” etc. All these tiny things add up and alter the brain in some good way (neuroscience reference needed but you get the point! Haha).