My Bad, i'm sorry

i've been very pissed at someone and now i'm very upset with myself. could i have been much stupider than this?
i'm very sorry dear friend, sorry for not understanding you. i'm sorry for being selfish thinking of just myself.
ok, listen to me, i'm sorry for what i did before you know the reason why i did it tho, and i messed it all up. we all make mistakes, i had no idea what i was getting myself into, but i just wanted to say i am really sorry. :"(