It sounds as if he's talking to his younger brother and trying to let him know that he's been through a lot and still experiencing some things. He's trying to relay to his brother that he has no clue what he's been through but his time will come to experience it. His younger brother isn't no better than him. He's just inexperienced and hasn't made any mistakes yet. He's also apologizing to his mother because of these very mistakes he's made. He let's her know that whatever she tried to teach him she was right all along.
It sounds as if he's talking to his younger brother and trying to let him know that he's been through a lot and still experiencing some things. He's trying to relay to his brother that he has no clue what he's been through but his time will come to experience it. His younger brother isn't no better than him. He's just inexperienced and hasn't made any mistakes yet. He's also apologizing to his mother because of these very mistakes he's made. He let's her know that whatever she tried to teach him she was right all along.