Neuroscience

brain regions linked to attention and focus align more closely as the familiarity between dog and owner grows.

neural pathways we don’t use die off over time. What makes our brains hold on to these pathways — and create more — is not simply repeating the same things we’ve learned over and over again, but continually taking on difficult problems.

Together, wanting and liking encourage us to pursue rewards. But these sensations can also stand alone, creating situations where you might know that you enjoy something but don’t want to go after it, or where you might have a strong desire for something that you don’t get much pleasure from.

“Worry can become like a bad habit of the mind. The rule of neuroplasticity—that our brain keeps changing based on our repeated activity—says that whatever we do a lot we will get better at. So if we worry a lot, we will get really good at worrying.” In other words, once you start worrying about something, it can be hard to stop.