The easy, flowing mind you are reading about is real. It comes from a different piece of the chart.
What it looks like in a life
If your thinking has always felt natural to you, look first at the conjunction you almost certainly have, Sun and Mercury in the same sign, which makes mind and identity move as one unit. Then look at what else Mercury touches. Mercury trine Jupiter, Saturn, or Uranus is where a mind gets its actual range.
The gift
Knowing the limit is a skill. Once you know these two are never more than a sign or two apart, you can read any chart faster and spot bad software instantly.
The friction
An invented aspect fills a gap with a flattering answer. It is more useful to know which planet is genuinely feeding your mind.
The esoteric layer
No lineage, Hellenistic or modern, assigns meaning to a Sun-Mercury trine, because the geometry never produces one. Meaning follows the sky, not the other way around.
Where this goes
Your real Mercury aspects run to the Moon and the outer planets. A full natal reading lists them and names the one that runs your thinking.
Related
See it in your own chart
Cast your chart free and read this placement next to everything else you carry.