Old habits are hard to break. To change an old habit you have to get in the habit of doing things differently. At first it will take a conscious effort but after a while it becomes a habit that you just subconsciously do. Athletes don't start out at the top of their game. They must practice and practice. A marathon runner has to build up their endurance before they can run 26 miles. Whatever you want in life you will have to work to get it. Doing something once isn't a habit it only becomes a habit of you get in the habit of doing it.