Attitude Quote

A lack of sleep will erode your optimism and emotional resilience - Matthew Walker
It means that sleep deprivation isn't just physical tiredness; it actively strips away your ability to see the positive and handle life's inevitable stresses.

Mental health Quote

Sleep loss and depression are two sides of the same coin - Matthew Walker
The core message here is that sleep disruption and depression aren't just linked; they are fundamentally intertwined manifestations of the same underlying biological problem.