Good news - our congitive skills actually get better as we age and our daydreaming triggers more often. Hmmm...that seems so contrary but clinical testing proves that even though we falter with names and daydreaming our brains are actually pretty sharp. That's reassuring!
The Secret Life of the Grown-up Brain: The Surprising Talents of the Middle-Aged MindThe Secret Life of the Grownup Brain.
You do have the power to snap out of bad thoughts.
Mixed results in clinical trials don't completely prove or disprove that supplements can aid the brain.