Sorry in advance for the longwinded post:
I don't disagree with you - it might be the underlying issue. Just wondering if any stage exists after the Excitement -> Obsession -> Frustration -> Lack of interest -> I don't care -> ??? (The End?)
I find I follow this cycle with pretty much everything and that the "Lack of Interest" step (so to speak) generally comes from hitting a big plateau.
First I get frustrated because my progress is stagnated, then I double down, then I almost seem to get
worse, then I stop caring. When I was younger I used to quit at this point, but as I got older two things happened. One, I looked back at so many things I regretted stopping and thought about how good I'd be at them now if I'd kept going. And two, I read
this book. As cheesy as it sounds, the book put a lot of things in perspective, helped me set better goals for myself, and pushed me to ride the lows so to speak.
Now I don't try and power through by practicing more and I definitely don't practice less. I keep things steady and just keep at it until something clicks and I start getting better again. All the while I just remind myself that effort is always rewarded at some point. It might not be in the near future, but eventually, I'll get where I want to be. In the meantime, I just enjoy the process for what it is.
The destination is great, but you spend barely any time there so I do my best to fixate less on that more on the day to day and squeezing the joy out of that instead.
tl;dr - I read
this book, started setting better goals, and learned to enjoy the process rather than fixating on the destination and now I don't hit the "I don't care phase."