Probably the greatest benefit of any 40 day practice is that you do the practice for the 40 consecutive days. Then there's the benefit of the chosen meditations.
If you look at what you're most consistent at in your day to day, you'll get a clue as to why things may or may not be working for you in each specific area. Because we get really good at what we do (or don't do)! And that's good news, because we can change that.