Why can't things just be simple?

Do you remember the days when if you had an arguement with your friend you would be back to being best friends the next day well not anymore.  These days things are just to complicated.  Last night i had an argument with my friend hannah and now she doesn't want anything to do with me.  The cosequences of this; i have been forced to quit training as all i do is cause arguments.  This morning i tried resolving things by texting her and saying that i was sorry and didn't mean to cause an argument and it was because i am completly stressed because coursework is due in today and i have 10 exams in the next few weeks.  She hasn't replied and i very much doubt she will because i am a complete bitch who ruins everyones life and to top it off i am pretty sure my dad hates me as of course the world revolves around him :/
Xxx