i can edit the blog but i cannot change the past

i can edit the blog that i wrote on the past but i cannot change the reality that has happened in the past..
the only thing that i can do is forget the unhappy thing that has happened and face the future
future is always there waiting for me
and past is for me to remember before i did something wrong
but i never realised my mistake in the past and i still repeating it till now
is it because i never really really get hurt thats why i dont know that i did something wrong?
if i can turn back the time, i will not choose to be the one that i am today...