Actually when I was a kid I used to get angry on pointless things then one day my dad just told me a trick he said " whenever you get angry just count from 1 to 1000 in your mind and then you will see your anger disappear like magic" and I tried it and yes sometimes I reached 200 ,140,600 ,500 and my dad was right my anger always used to disappear sometimes I just used to laugh that what the hell am I just doing ?
Actually you can try this out it works.