This time of year, like most Americans I think, I try to take some extra time to think about what I am grateful for. I talk about this a lot, but gratitude itself is actually a powerful lifehack - it has been shown scientifically to help you get better sleep, reduce stress, have better eating habits, and even reduce your feelings of physical pain.     I try to take advantage of this nice little fact, so I keep a ‘gratitude journal’ next to my bed - I start every day by taking [...]