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Discipline is taught by teachers not by the art, respecting ones teacher shall eventually lead me to enlightenment since the teacher gives me guidance. Once enlightened the way of the martial artist spreads to all aspects of life. Dabbling is a way of finding something i like. Muay Boran courses are inconsistent due to the vast amount of seminar grandmasters go to.
Teachers may be able to help you, but discipline must come from within. If you only practice discipline in the dojo, you don't have self-discipline. That you must have. Otherwise you are being disciplined, not making self-discipline a life choice. And you don't have any discipline without that, only an occasional acceptance of outside discipline.
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Since I'm the only Jewish kid at my school my friends never exercised restraint towards antisemitic language, now when they mess up or when someone else does something stupid they call him a "Stupid Jew" and then someone has to tell a really bad holocaust joke.
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I've already expressed my distaste for their actions and they have realized it and then they would claim that they would fix it but they never do.
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Is your instructor aware of that? Are you are doing something to bring that on yourself (it is still distasteful and inappropriate, of course)?
I would question if you are in a good school, and how you pick your friends.
In Korea, in many arts, when a student reaches 3rd dan, they are often encouraged to study another martial art up to black belt. This helps the student to know if they want to continue in their original art, and want to commit to it. The next level is master level after all. You might want to consider if there is wisdom in that approach, and whether you think you should take that into consideration in your own training. Remember this, you are 16, you only have 16 years of experience and a lot of that you don't even remember. God willing, you have a lot of years in front of you. You have time to learn one art well, then decide to try another one, or not.
I took TKD some many years ago, only up to 8th Green. 20 some years ago, I began Hapkido. Hapkido, at least as I learned it, taught blocking, punching and kicking, but didn't really emphacise learning how to punch much, kicking more (naturally, it emphacises other things such as joint locks and breaks, pressure points, throws, etc). Luckily I still remembered how to do both. Other schools may do differently. So the TKD helped me some. I don't think it would have helped me so much if I had tried to both at the same time. Only you can decide if you are different, and you may be. But I would still recommend only one art until you are at least about mid-way into the art before trying something new. And I really recommend attaining at least a 1st dan, if not a 2nd dan before dabbling in something else.
I'm not going to really recommend what art you should take. Naturally, I think Hapkido is a really good and well rounded fighting art, but that's because it is the art I have chosen to learn. You seem to think striking is your best thing, yet call it a weak point. You look favorably on standing grappling, which I think is better than a ground based grappling. Others will surely disagree based on their training. You also may need to consider what art is most likely to be taught in the places you may move to. Believe it or not, as I told you, there is no bad martial art, only bad teachers and students.
Many people put down TKD or those types of Karate that teach little else but blocking, punching and kicking. When I taught, I used to tell my students to be wary of such thoughts. If all one is taught is blocking, punching and kicking, when you defend against that person, you best expect them to be very good at blocking, punching, and kicking. So my student's goal was to be very good at defending against a very good blocker, puncher and kicker, not to disrespect that art.
But none of us can really tell you what you want to do as you are the one who has to live with the decision you make. Choose wisely.
