‘Following through a New Year’s resolution to engage in regular physical activity and a healthy lifestyle requires not only the motivation to change, but also the willpower (also called self-control) to overcome temptations (e.g. unhealthy foods, sedentary activities). However research indicates that self-control is a limited resource, and therefore individuals should try to consolidate a change in a single health behaviour first (i.e. regular exercise) and then move on to another behaviour (diet). Trying to change multiple behaviours simultaneously could be counterproductive as exerting self-control towards one behaviour (avoiding sedentary temptations) might undermine self-control attempts toward the other behaviour (avoiding a high calorie snack). Individuals are also less able to exert willpower later on the day than early in the day if their jobs require a high level of self-control. Also research has shown that many individuals overestimate their ability to resist temptation. People who perceive to have a high capacity to control their impulses expose themselves to more tempting situations and ultimately engage in more impulsive behaviour (perhaps as a result of depletion of willpower), than those who perceive a lower capacity to self-control. So researchers recommend that an effective way of maintaining self-control, particularly when depleted, is to avoid highly tempting situations. For example new exercisers who plan to exercise in the evening should avoid watching television first “for a little while” before they start their workout. Research has also indicated that self-control can also be boosted by inducing positive mood, promoting motivation for health behaviour which is based on internal reasons (e.g. personal importance) as opposed to external reasons (e.g. pressure from others, social approval), and taking breaks between activities that demand self-control. Further, self-control can be enhanced by making an activity more habitual. For instance it has been found that forming implementation intentions (“if-then” plans) can help to overcome temptations. Using again the example of new exercisers who plan to exercise in the evening, these individuals should form a plan so that they are prepared when at the end of their working day they are invited out by their colleagues for “a drink”. Lastly, keeping blood glucose levels steady by consuming regular meals might help individuals self-control in tempting situations (e.g. being offered a high calorie cake) when they are in a “hot state” (i.e., hungry).’