Often when a person can't get past stress, she will turn to overeating, drinking or smoking, which can become a greater problem than the stress itself.
While overeating would be seen by some as an indulgence of self, it is in fact a profound rejection of self. It is a moment of self-betrayal and self-punishment, and anything but a commitment to one's own well-being.
How does one control weight? By not overeating.
How does one stay in shape? One plays sports. There are no magic pills here.