by Dr. Ron Siegel, one of the leading champions of mindfulness, stated that mindfulness is all that is necessary to combat anxiety, depression, or similar mood disorders. In DBT, we learn that mindfulness is one component to a system that also challenges thought processes and belief systems.
Mindfulness and meditation has been examined and studied scientifically. Brain scans show a difference in brain activity in people who regularly practice meditation compared to those who do not engage in the practice. Regular mindfulness and meditation practices increases connections between different centers of the brain.
A Zen proverb states that a person should meditate 20 minutes every day unless he does not have time. . . Then he should meditate 40 minutes every day.