Mindfulness meditation aka ... Thankfulness

Mindfulness meditation training changes brain structure in eight weeks
...The analysis of MR images, which focused on areas where meditation-associated differences were seen in earlier studies, found increased grey-matter density in the hippocampus, known to be important for learning and memory, and in structures associated with self-awareness, compassion and introspection. Participant-reported reductions in stress also were correlated with decreased grey-matter density in the amygdala, which is known to play an important role in anxiety and stress.

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Small trials have suggested that such meditation creates more than spiritual calm. Reported physical effects include lowering blood pressure, helping psoriasis to heal, and boosting the immune response in vaccine recipients and cancer patients. In a pilot study in 2008, Willem Kuyken, head of the Mood Disorders Centre at Exeter University, showed that mindfulness meditation was more effective than drug treatment in preventing relapse in patients with recurrent depression. And in 2009, David Creswell of Carnegie Mellon University in Pittsburgh found that itslowed disease progression in patients with HIV.

Most of these trials have involved short courses of meditation aimed at treating specific conditions. The Shamatha project, by contrast, is an attempt to see what a longer, more intensive course of meditation might do for healthy people. The project was co-ordinated by neuroscientist Clifford Saron of the Centre for Mind and Brain at the University of California, Davis. more here Shamatha Project


I think this is exactly the same thing as thankfulness expressed ... not petitions ... gratitude.