Setting unrealistic goals?

I love having four days off in a row.  Last week was a great week of workouts.  I strung 6 of them together and the one day off seemed to do the trick as far as recovery.  I ran 28.29 miles, Insanity two time for one and a half hours, for a total calorie burn of 5230.  My weight went to 215.6 pounds for a loss this week of  1.2 pounds.  No swim or bike ride but that will come.  When I look in the mirror I can finally see a change.  When I think back to when I started at the prison 18.5 years ago I weighed 180.  I have posted before how I yo-yo dieted up to 251 pounds.  That was the weight is was 3 or 4 years ago around Christmas when Dahl and I weighed ourselves.  I have slowly brought my weight down.  Last August I went back to 241 pounds and that was an eye opener for me and that is why I weigh myself everyday now.  I guess losing 25.4 pounds since August and keeping it off is something to be proud of.  BUT, I need to keep the mind-set that I have now to be able to accomplish this.  I hate unrealistic goals, but I am setting one right now.  No gain in weight from now on.  If I see one I have one week to get it off.  Run a marathon at 180 pounds before I die