I’m only two days into working The List, but I’m already aware of benefits. What I have learned, or perhaps remembered, is if my mind and body are not disciplined, then I tend to obsess over circumstances that I cannot affect or control. Since the pursuits and activities on The List are goals I wish to accomplish, then even small successes create happiness. It seems a small accomplishment, indeed, to have mowed the yard, but having done so makes me happy.
I know next to nothing about psychotherapy, but I think training the mind to focus on that which makes one happy is a big part of it.
I have learned (or, actually, remembered) that happiness is often a choice I make.