How can I control my aggression towards others?

Here's an option, when you get angry and want to take it out on someone, turn around and walk away from it, close your phone, do whatever it takes to not interact with that person. You'll will still feel angry, but you have to put that anger towards something else, like a punching bag or by writing it out, and then afterwards, you can discuss to that person what had happened and what made you upset, so that the other person knows, but do not intimidate them. 

Also, you've learned that by punching and shouting is acceptable to get things to go your way, and of course that is bad, because I don't think you would like anyone who punches and shouts at you, so why would you think it's acceptable to do that to someone else? You are willing to put someone else through pain, because you prioritize yourself and your own needs above them. You care less about their physical safety, and more about whatever thing it was you wanted from them. 

So if you want someone to do you something for you, and they say no, just do that thing yourself, or just do that thing for yourself in the first place and don't demand that others do things for you. 

Your boyfriend like all people, have their priorities, and if they really need to study, or get things finished before a deadline, or they're busy at work, and they see that you're leaving them mean text messages, do you think they'll want to stay with someone who keeps being mean to them? I mean having a partner who discourages them makes them second-guess the relationship, and wonder if they really want to be with you.

Also, if you just find that you get angry a lot more often than other people by even the smallest thing, it might be a mood irregulation thing that's not really your fault, but caused by biological wiring, and I know that some people with ADHD has mood irregulations that cause them to become very easily irritable, and they are not happy with themselves when they react in negative ways, and perhaps if no other method for controlling your anger works, then you can look into medications that can help regulate your mood and give you a better quality of life.

Here's an option, when you get angry and want to take it out on someone, turn around and walk away from it, close your phone, do whatever it takes to not interact with that person. You'll will still feel angry, but you have to put that anger towards something else, like a punching bag or by writing it out, and then afterwards, you can discuss to that person what had happened and what made you upset, so that the other person knows, but do not intimidate them. 

Also, you've learned that by punching and shouting is acceptable to get things to go your way, and of course that is bad, because I don't think you would like anyone who punches and shouts at you, so why would you think it's acceptable to do that to someone else? You are willing to put someone else through pain, because you prioritize yourself and your own needs above them. You care less about their physical safety, and more about whatever thing it was you wanted from them. 

So if you want someone to do you something for you, and they say no, just do that thing yourself, or just do that thing for yourself in the first place and don't demand that others do things for you. 

Your boyfriend like all people, have their priorities, and if they really need to study, or get things finished before a deadline, or they're busy at work, and they see that you're leaving them mean text messages, do you think they'll want to stay with someone who keeps being mean to them? I mean having a partner who discourages them makes them second-guess the relationship, and wonder if they really want to be with you.

Also, if you just find that you get angry a lot more often than other people by even the smallest thing, it might be a mood irregulation thing that's not really your fault, but caused by biological wiring, and I know that some people with ADHD has mood irregulations that cause them to become very easily irritable, and they are not happy with themselves when they react in negative ways, and perhaps if no other method for controlling your anger works, then you can look into medications that can help regulate your mood and give you a better quality of life.