"When we give and receive ‘thank you’ notes, our brain is automatically redirected to pay attention to what we have, producing intrinsic motivation and a strong awareness of the present. Also, at the neurochemical level, gratitude acts as a catalyst for neurotransmitters like serotonin, dopamine, and norepinephrine – the ones that manage our emotions, anxiety, and immediate stress responses."

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- Mathuleena Roy Chowdhury