There's probably pills for that.

My memory, of lack of one rather, is starting to be my downfall.

I keep getting in trouble because I can't remember things to save my life.
I'm not being lazy.
I'm just forgetful.
I'm not going out of my way to purposely make things harder on you.
I'm not a bad kid.
I'm not taking advantage of the things you do for me.
I'm not lazy or against going out of my way to do a little more.

I just simply forget.