The "Make it Attractive" principle focuses on using positive reinforcement and temptation bundling to make the habit more appealing to you. The more attractive a habit is, the more dopamine gets released into your brain, which in turn makes you more likely to repeat the behavior.
For example, if you want to get into the habit of exercising regularly, you could make it more attractive by watching your favorite TV show only while you're on the treadmill. Another way could be to work out with a friend, making the experience more enjoyable and socially rewarding.
Or you find it hard to save, for every $100 saved, treat yourself to a small indulgence like getting your favorite ice cream. This makes the act of saving more appealing because you associate it with a positive reward.