Instead of hitting yourself over the head for "failing", why not try to think about why this happened. You made a conscious choice to spend money to buy a sugary drink when there were other options available (even a sugar free drink if water was too boring). So what was driving that desire? Were you tired and looking for a "pick me up" from the sugar? Were you angry or upset or stressed? How long prior to this had you had something sweet? Even a piece of fruit? Only you can answer these questions, but I think we need to use our slip ups as tools - clues to detect areas we are weak in and then figure out ways to prevent a repeat next time we are faced with the same stressors.
As for the cake - that's a no brainer - once you have a little sugar you can hardly help to have more - you've awakened the beast.
My suggestion would be to keep a food journal - not to get anal about counting grams or anything, but more to write about what you ate and what was going on in your head and body before and after you ate. Over time you'll see patterns and get clues as to how to protect yourself from more "slips"
If the early bird catches the worm, I'd rather be late & eat cheesecake!
| Pounds lost: 75.5