Control your Temper

Finally, I see, I have to control my temper and change my character. I know it is difficult to realise,maybe, once I change,I will become adult and sober. I need it really?I do not know,at least,for my work,perhaps,you must pretend to do it like adult man,if you are not happy like this,you will do it?

How to control, I do not konw, so, would you give us some advices to control it?