Repetitive thoughts become patterns of activity in the brain. Many thought patterns that originate in childhood are carried into adulthood. When we do not re-examine our thoughts as we grow, we treat our thoughts like an uncultivated garden. When we challenge our unhelpful notions and ideas, we become conscientious, deliberate gardeners, and our thoughts bloom healthily. Learning to challenge what you think rather than accepting thoughts blindly is essential. Thoughts are just thoughts; careful examination helps us determine which ones are helpful and most deserving of our attention and are up to date with our knowledge and experience. This process is known as updating the reward value of our thoughts and behaviors; it is a necessary part of growth and restoration.