You can’t buy happiness, they say. But we “buy” dopamine fixes all the time. Just whip out the smartphone and we easily go down that rabbit hole of endless doom scrolling, falling into the addictive trap of instant gratification, chasing likes, shares, comments and followers as rewards. Dopamine is a neurotransmitter that plays a key role in our experience of pleasure, focus, reward and motivation. It propels us to put in effort, devote time and feel good about our achievements. Before the...