Everybody tilts sometimes but managing tilt is a very good skill. The most important thing to think about is to not bring a negative mumble athmosphere while tilting. If you are mad about something, realise that thinking about it will only make it worse as it will send you into a negative thought loop. Take deep breaths for a few seconds and calm your heart rate a bit. Realise what has happened has happened, and being salty about it won't change that. Don't talk about it in mumble, keep your comms focused on the game.
I have some rage problems myself and I have to work actively on minimising the amount of rage so I can focus on the game and not tilt my teammates. My best results so far comes when I actively try to have no reaction when I die or fail to do something, or a bug happens or whatever. If I must rage, I know I have to keep it to myself and start to focus again in a few seconds.