After a long day of working, taking care of my kids and worrying about the state of the world, it’s easy for me to relax into one of my favorite activities: online shopping. I may not be able to control how much groceries cost this week or stop a global conflict, but I can find some relief from a not-so-good habit. Hitting “purchase” on a new gym outfit or scented candle somehow calms my nervous system before bed. I get a little dopamine boost, feel more relaxed and, well, more in control.