I have no idea how I aim. I don't imagine a ghostball or have the amazing ability to keep focused on a contact point. Maybe I learned via ghostball and after a few years it became so automatic that I just started seeing the shots. Can't know for sure because I don't remember exactly how I started.
In about 2006 I started thinking about teaching my daughters to play pool. They were 6 and 8 at the time. Not being able to show them how I do it made it a challenge. So I experimented with several different aiming methods. I don't like pivoting methods because the exact same pivot produces different shot angles depending on the distance between the balls. Back then, years ago, I worked out a way to adjust for this, but it involved having to accurately guess at the distance in order to make it work consistently. Then I looked fractional aiming and liked the concept of straight alignment towards a known aim point. But of course there was the age-old problem of not knowing exactly which fraction to use without knowing the angle of the shot. That's when I started troubleshooting that old-age problem and found a solution.
Now I still aim by what feels like instinct, not focusing on any particular aim. But I also incorporate my fractional system on a shot here and there when I don't quite see it naturally. It also works as a jump start when I find myself hitting the balls poorly. All I do is use the system on every shot for a few balls, sometimes a rack or two, and all of a sudden I'm automatically back in tune and just seeing the shots again.
To each their own. If what you're doing is working, keep doing it. If it's not, try something else.