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Gritty people wake up thinking about the same questions they go to bed thinking about.

I know the end of the article does touch on the negative aspects of grit, but the quote above makes me wonder what the difference between "grit" and "obsession" is. One is favorable, one is not.  Thin line..

Gritty people will go have a beer at the end of the day and obsessive people will never get it off their chest.

There's always a fine line between any thing, mostly because the words used to describe "stuff" often comes quite similarly to the opposite of the action that's used to describe the "stuff".

It's literally application, learning, and knowing when to leave the party and sleep.

Definitely a weird balance to practice.

Every single day from the time I go to sleep to the time I wake up it haunts my head in repetitive motion. How do I get better, improve..? It's come to the point where it's all I can think of the entire day without rest even when I eat hell when I sleep I dream of it...I don't know if this obsession to become better even greater than I was yesterday every single day is healthy or not but, I like it.... would this be a problem then?

It's all natural. I feel kinda the opposite lately. I was "obsessed" like this too. Thinking about what to try next pretty much all the time. ...and I was proud of it. Remembering like it like it was yesterday. Sitting in a classs quietly figuring out what amp sims can be good for, or how to make lowend "booms". For some reason this state arrives much less frequently these days. Usually when I have totally nothing to do + no access to computer (long car drives) or when watching SeamlessR videos. Otherwise it got a bit colder lately.

...I think this is more likely to be a problem.

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Every single day from the time I go to sleep to the time I wake up it haunts my head in repetitive motion. How do I get better, improve..? It's come to the point where it's all I can think of the entire day without rest even when I eat hell when I sleep I dream of it...I don't know if this obsession to become better even greater than I was yesterday every single day is healthy or not but, I like it.... would this be a problem then?

It's good that you want to improve but be VERY careful about this attitude. It's this exact same attitude that led me to neglect a lot of things in my younger years. Basically... don't forget to eat, exercise, take breaks, and give attention to your loved ones. You don't need to become a savant in order to get better and improve. Keep in mind that when you want something extremely bad and aren't able to get it you can easily end up getting frustrated.

VERY true! ...not only frustrated. You can look back in few years and find out that you've missed some quite cool or important experiences. Especially social ones. Careful with that! Dreams are sweet, but don't let them take over your whole life.