The more you stop the harder it is to start again and the harder it is to keep going and get momentum.
In terms of exercise the more you stop the harder it is to find motivation to get started again. Then you get mucles soreness and want to stop again. Where as if you just pushed through and kept going you keep gaining momentum.
In relationships if your on and off the on is never going to be the same and you have more chances of breaking up again.
In business if you only market when you need to its going to be a lot harder to get sales than if you marketed consistently.
Basically when your on and off the on gets 10x harder and quitting or being off gets 10x easier so keep going because the off is not worth it