The truth is we are all already motivated. The question is: What are we motivated to do? Some people are motivated to do healthy things, while some people are motivated to do unhealthy things.
What do I mean by this? For example, If you are someone who is prone to sitting on the couch and chowing down on unhealthy food, you do not have a lack of motivation. This is to say you have a reason for participating in unhealthy activities. And that reason is your motivation.
Another way to look at this is by asking: What are you getting out of your unhealthy habit(s)? And do not fool yourself. You are gaining something by sitting on the couch eating donuts. Identifying what you are gaining is the first step in fixing the problem.
What to do next is shift the focus. Instead of concentrating on all the things you are getting out of your bad habit, think of what you are going to lose if you keep up with this unhealthy lifestyle. Think of what your body will look like in the next five years. Become disgusted. That’s right. Think of the unhealthy activity and become disgusted. Then do it again and again. Think of the unhealthy activity and become disgusted.
Before you know it, instead of being motivated to do unhealthy things, you will find the motivation to avoid them.