It is very important to create a good workout plan, the plan that will make the exercising a fun activity but also something that will put the practitioner constantly in front of new challenges. For example, choosing martial arts would be an interesting option. Most of martial arts emphasize cardio workout with slight resistance training. This combination is actually excellent for weight reduction while at the same time something useful will be learned (self-defense, for example). With most of the martial arts, lean muscles and fit body are created, although many people include at least some light muscle mass building, especially judo, jiu-jitsu and wrestling practitioners.
Those who are not into martial arts should think about cross training. This type of workout combines several different workouts in order to create a program which will keep the muscles always active without easing the exercising process. There are also several forms of cross training. One would be using the muscles in the same way but with different exercises (for example, a combination of running and swimming), and using the muscles in a completely different workout (for example, spot jogging combined with some weight lifting).
Strength of the mind
As in all things, the most powerful tool in human's hands is the mind. If the mind becomes used to exercising, if it is convinced that regular physical activity is a normal part of life and not some nuisance, there will be no problem. If not, perhaps it is time to change the training program. Taking a break is not smart when things go downhill, because most people never return to the training regime. Together with exercising a good eating plan must also be present. This will speed up the process of body shaping, which will create motivation to hold on to the program. Of course, diet must complement the exercising process. If training sessions are intensive and exhausting, then some fast, fad diet should not be used because it would simply provide too low energy input.
This is why it would be a smart thing to consult experts in both exercising and nutrition, to see what would be the best possible combination for creating the most impressive results.