Is Gratitude Practice good for mood & stress?

The evidence points that way, though it's not yet conclusive. Gratitude practices have been tested in dozens of small randomized trials, producing a genuinely useful but modest evidence base. That's reflected in an evidence score of 55/100 for its role in mood & stress, drawn from 5 studies (4 RCTs), with an estimated impact on longevity rated moderate (35/100).