These are two completely different dynamics in your head. One gives resistance and the other flows. You can even feel it in your body as you say it.
Successful people eliminate resistance anywhere they can.
People who have gone from out of shape to great shape- and have retained it over a long stretch of time have turned their have to into a want to.
You can fight yourself into exercising every day, or you can flow into exercise daily. That’s the true art.