Complaining professionally

Since I started I have come to the realization that I have taken on a new habit. complaining I have become adept at the art of complaining.
The subject could be different but the complaining is a constant . I know going out of your comfort zone is well to say the least not pleasant but the fact that complaining has become like second nature every time the opportunity arises is more than frustrating.
The fact that even this post is complaining that I cant stop complaining, making the monster even bigger, feeding into the habit even more.
I don't know how to stop.But I want to, although it doesn't make me avoid doing the task at hand but starting the task, whatever it might be with, a negative attitude or doing it with a bias formed about the difficulty doesn't make it easier.
I would like to learn how to not complain on how not doing it would be inconvenient or how it could be easier to do it in a less than satisfactory manner without putting as much effort.
It is a bad habit that I want to stop but am finding that starting was way easier than stopping and its a slippery slope after starting.