Moody Bad

Ur
How do y'all control anger and not go off unless it's that time we're you can't take it no more.. 
I just went off on T-Mobile ass couple minutes ago(excuse my language),I couldn't take it no more.. 
I need to calm down and chill, how y'all do that fast and hurry so it won't affect my child unless this is how I'm going to be for 7 more months..