Changes??

Ever since this year everything change i become very violent,hot-tempered...bla bla alot of things which just isn't me..i just think is this part of growing up??second stage of puberty?? genes just like like family blood?All hot-tempered..The genes starting to grow inside me which cause my emotion changes and i just get stress easily which i am suppose to be the happy go lucky kinda person..what is happening..at work i can get emotional just wander off into my thinkings while carry on with my work (" I did the wrong stuff at work and serve it to customers") luckily none of then knew.In simple words i just lose my focus very easily now.I can't get my thinking straight even though i tried being alone for awhile but nothing worked....THINGS JUST AREN'T SAME ANYMORE....i just feel empty..nothing but just work study rest nothing else matters...i think laying low for is the best solution for now.