So why does it seem that only bad habits emerge when we face the storm of stess? Wood says it'sa matter of attetion. We don't notice so much when we fall back into good habits and so they aren't problematic. It's the bad habits we focus on, and thus people are more aware of falling back into bad habits when their willpower is low.The findings may prove useful for reinforcing good habits that we cultivate to help our health. But that requires taking the time to establish these healthy behaviors before a challenging situation strikes. If you want your default to be to exercise when you stress out -rather than reaching for a doughnut -you have to hit the gym repeatedly.Getting enough exercise, eating right, getting enough sleep, not smoking- -all of these should become an unthinking, automatic part of your day," Wood says. If they are, then you will continue to perform them even when your willpower is low and you can't muster the energy to 'do the right thing' for your health." The fact that habits are hard to break can work for you or against you.