What is the highest Elo rating an amateur player can achieve?

I look to chess no way as a profession, but as a hobby, one like the several I have. So this question sprouted up to me :

What is the maximum rating I can achieve, saying that I am not ready at all to drastically change my habits, and that I have always been good at work that requires thinking?

No one can answer this question for you without really knowing you and how you play.

A quick look at your stats shows that you just started playing here again after a long layoff. You have quickly lost some points off your blitz rating, probably owed to inactivity.

There's no real trend line that can be followed. If you had gained 100 points a year for the last 3 years, one might speculate based on that trend. In your case, you had one period (April 2014) where you played hundreds of games in a very short time and saw a rapid increase in your rating. Are you going to give that kind of effort again?

You sounded pretty self-aware at the start. If you are just a hobbyist, what does it matter if you are a patzer or a master? You are mostly here to have fun. (That doesn't mean you can't still try hard to improve.)

Good luck.

The question has a flawed structure. It's akin to "what is the maximum rating provided minimum effort."

However there is always less effort to give, down to the point you give up chess completely.

So it seems the correct (so to speak) answer is that the maximum rating you can achieve is the rating you currently have.

GM Luke McShane is sometimes referred to as the world's strongest amateur because he has a serious day job and plays chess only part-time.  He sets a very high standard for how good an amateur can be! 

Some people can reach master with a moderate amount of effort, others can't.  I got to 2170 and quit for a long time because otherwise I was going to flunk out of graduate school.  There's how much aptitude you have, there's how much effort you put in, there's how well-directed that effort is.  All unknowns.

My single piece of advice for you is that you will hit a brick wall if you only play blitz.  Some slow chess is important to develop new positional ideas:  if you play only blitz you tend to get into a rut positionally.

I would say  the ceiling for being an amateur goes at exactly 1999 ELO. Once you pass the 2000 barrier you are a pro, bro.

ich bin pro yes

It's purely a question of taste. It's like asking how young should one be to be called a "lad" in Scotland. There is no correct answer.

There is always an answer, just it might be multiple ones.

When Kamsky came back he was technically an amateur with a 2700 rating playing in some candidate's matches