Losing Control of My Self-Control

Why is it that I have no self-control when it comes to indulging in a sweet treat sitting in a candy dish on my co-workers desk? To my credit, I have managed to avoid it for the past 3 days (no thanks to my longing stares and other coworkers oohing and aahing over the candy). But today I broke down, enjoying one tasty chocolate-covered macadamia nut cluster, which surely packs enough calories and fat to make me practically not be allowed to eat anything else at all today.

In the greater scheme of things, the bigger question is why did I feel the need to put anything in my mouth after enjoying a filling lunch at Cafe Bacci?