Invite yourself to fully receive this next statement. Any goal that you ask of yourself that is not established from a place of self-respect and dignity and an acknowledgement of what is truly doable for you at that time is doomed to fail. It cannot succeed. Not for long anyway. Sooner or later you will feel overwhelmed by the pressure of those expectations and will begin to procrastinate and ultimately use food to cope yet again.
Keep in mind this vicious cycle is of your own creation. It is only your Drill Sgt. and his all-or-nothing thinking that keeps you stuck in this cycle of self-harm, constantly diminishing your self-esteem. There is no legitimate reason for you to be forced to do what the Drill Sgt. says you must do, in the way he says it, and in the time frame which he has created.