Habits again (first time here, but not the first time)

 How does one catch themselves from doing an old habit? Once in the process of the habit, how can we make it stop? Think it's time to reread atomic habits. After the fact, I can easily say, hey you did that, but when it starts I'm not giving myself any checks to see if I'm doing things the right way in the first place. This is bad. And it leads to bad trading. Overtrading or using bad sizing. Not stopping and checking things out objectively is not good. Well. here's to starting over with habits. Cheers!