I read the article and it does not proof at all your point of view.
I will copy here a few fragments of the article and give my opinion.
If you are guilty of being a Good Starter, but a lousy finisher — at work or in your personal life — you have a very common problem. After all, David Allen’s Getting Things Done wouldn’t be a huge bestseller if people could easily figure out how to get things done on their own.
More than anything else, becoming a Great Finisher is about staying motivated from a project’s beginning to its end.
In their studies, University of Chicago psychologists Minjung Koo and Ayelet Fishbach examined how people pursuing goals were affected by focusing on either how far they had already come (to-date thinking) or what was left to be accomplished (to-go thinking). People routinely use both kinds of thinking to motivate themselves.
But too much to-date thinking, focusing on what you’ve accomplished so far, will actually undermine your motivation to finish rather than sustain it.
If, instead, we focus on how far we have left to go (to-go thinking), motivation is not only sustained, it’s heightened. Fundamentally, this has to do with the way our brains are wired. To-go thinking helps us tune in to the presence of a discrepancy between where we are now and where we want to be. When the human brain detects a discrepancy, it reacts by throwing resources at it: attention, effort, deeper processing of information, and willpower.
Great Finishers force themselves to stay focused on the goal, and never congratulate themselves on a job half-done.
The article describes how the brain reacts. So the point is to reprogram your brain and avoid the described behavior.
First of all I trade based on mathematical models. These models are never influenced or manipulated by a human brain. The models calculate and work fully independently from any human intervention. So what the article describes is non existing in the generated entries and exits.
I trained fulltime for many months day in day out to learn to enter and exit ONLY WHEN THE SYSTEM TELLS ME TO DO SO. So the problems with my brain are non existing anymore. I know by experience that every manual intervention in my systems will in long term cost me money. Even if I by accident might improve a trade. In the long run I can never beat the performance of the mathematical models. The fact that I have in general very good entries and never have a lasting open loss makes it easier to follow the rules and not intervene.
On top of that the article does not specify who is a great finisher. Everybody who enters a trade is convinced that he took a good entry, if not he would not enter. I am convinced by my models and you are convinced because of the break of a support or resistance.
Being a good finisher is not linked with where you enter the trade. Or do you think that only people who enter on breaks of support or resistance can be good finishers? I don't see the link of what you suggest.
A good finisher is someone who finishes good, no matter where he entered.