The next bad habit is to do with the planning. And that's chiseling your plans in stone. Because with the three phases, you spent the first phase coming up with ideas coming up with a structure, maybe a list of arguments for your essay, maybe a list of plot points for your short story, whatever it is. The problem is that you don't want to be too attached to the structure. The structure is there to serve you, not the other way around. So if while you're writing, you find that the writing is going in a different direction to what you had planned.
Take a quick moment to ask yourself if this is okay. Are you getting off track or more likely have you unconsciously found a better plan to follow? If this is a better plan to follow, then follow it. This is your unconscious mind telling you that it's come up with a better way a new idea of doing things if you try to shut that down. Well, you end up sort of fighting yourself. And your internal dialogue instead of focusing on the writing starts going back and forth.
It's like I've come up with this great idea, but we're not going to use it through going this way. But the idea is really good, but we have the plan already. So we've got to go to stick to the plan. If that is going through your head while you're trying to rise, it can be very, very distracting. And yet another cause of writer's block