i don't understand that last thing

i dont really understand fully why i did that . but you see , the people on skool some are emo . you are emo . they feel like shit , you feel like shit , they cut , you cut .
thats why i did that . but please understand , i had a tough past , wen i was 12 , my older sister tryd to run me over and my dad was dealing drugs , i hated my mom .
but that Allll changed now . i live some were els , my dad past a way , my sister is some were i dont know , and my mom is happy whit me and Ron my stehp dad , he is really nice , so it all turned al good for me .