Yeah everyone can make some progress but i equate it to playing instruments. If you;re talented it comes naturally and effortlessly. You just “do it”, it makes sense.
If you’re not talented you’ll spend years taking lessons and advice in an effort to be marginally as good as the natural will be in a fraction of the time.
That’s the truth. So yes, anyone can improve but that’s just half the story.
Also i agree with not getting into the negative mindset but being overly optimistic is also detrimental because you’ll ignore the obvious. Also equally bad.