Virtues don’t come through simply thinking about them. You have to “exercise them.” Aristotle’s promise is this: if you want a virtue, act as if you already have it and then it will be yours. Change comes through action. Act first, then become.
via How to Feel Like a Man | The Art of Manliness.
If you want to be thin, then act as you already are thin.
If you want to be fit, then act as you already are fit.
If you want to lose weight, then act as if you already lost weight.
How do I mean? Basically, What do fit people do? They exercise consistently. What do thin people do? They eat consciously and sparingly.
The body follows the mind. Where is your mind taking you?