Just two hands

I'm wondering, where my fiery temper originated from.
I'm concluding things on an impulse just like an incident where I got stuck at the carpark exit and an uncle kindly walked over to see if I need to borrow his cashcard. Nearly fugged him upside down cos I thought he was going to taunt me. But I regretted my intentions couple of minutes later. Shit! How come I feel so destructive. The smallest thing can ignite a nuclear in me.
Pls tell me I can get back on the right track again.
In addition, I seriously very tired about whats happening around me.
Not that I'm ranting, but my mind have not stop thinking for weeks.
The only time it gets rest will be during sleep, then when I'm awake, I'm be thinking about my pals' problems and other nonsense. On bad days, I would even wake up in the middle of the night feeling worried.
What the fug am I mutating into??!?!
I really hope to save everyone, but its just two bare hands that I have.