Make it easy. Habit researchers know we are more likely to form new habits when we clear away the obstacles that stand in our way. Packing your gym bag and leaving it by the door is one example of this. Wendy Wood, a research psychologist at the University of Southern California, says she began sleeping in her running clothes to make it easier to roll out of bed in the morning, slip on her running shoes and run. Choosing an exercise that doesn’t require you to leave the house — like situps or jumping jacks — is another way to form an easy exercise habit.

Dr. Wood, author of the book, “Good Habits, Bad Habits: The Science of Making Positive Changes That Stick,” calls the forces that get in the way of good habits “friction.” In one study, researchers changed the timing of elevator doors so that workers had to wait nearly half a minute for the doors to close. (Normally the doors closed after 10 seconds.) It was just enough of a delay that it convinced many people that taking the stairs was easier than waiting for the elevator. “It shows how sensitive we are to small friction in our environment,” said Dr. Wood. “Just slowing down the elevator got people to take the stairs, and they stuck with it even after the elevator went back to normal timing.”

Dr. Wood notes that marketers are already experts in reducing friction, inducing us to spend more, for example, or order more food. That’s why Amazon has a “one-click” button and fast-food companies make it easy to supersize. “We’re just very influenced by how things are organized around us in ways that marketers understand and are exploiting, but people don’t exploit and understand in their own lives,” she said.

Reward yourself. Rewards are an important part of habit formation. When we brush our teeth, the reward is immediate — a minty fresh mouth. But some rewards — like weight loss or the physical changes from exercise — take longer to show up. That’s why it helps to build in some immediate rewards to help you form the habit. Listening to audiobooks while running, for example, or watching a favorite cooking show on the treadmill can help reinforce an exercise habit. Or plan an exercise date so the reward is time with a friend.

Take the Healthy-Habits Well Challenge: Now that you know what it takes to start building healthy habits, try the new Well Challenge, which gives you a small tip every day to help you move more, connect with those you love, refresh your mind and nourish your body. Just sign up, and I’ll send you a daily email about your next challenge. You can also get these tips and more delivered each day to your smart speaker with My Well Minute, our new Flash Briefing skill on Alexa. Find out how to get started here.