Feeling Bad

Errr... Started my decent job as a relief teacher in my previous secondary school, today, for the first time. So I'm still not used to it- I need to change my strategy, or else spouting vulgarities when getting pissed off by rowdy students not only will not work, and will jeopardize my job.. I need to be strict and at the same time be fluctuant in my behaviour. I need to control my already foul temper