Life. The choices we make, the paths we choose, the chances we take and squander. It all effects the future and present at the same time. Intertwined with that is feelings of achievement and regret.
Deep. I have been thinking about this recently. I have had some big decisions to make in the last few months, so, being a negative person, I often dwell on decisions and mistakes. I often don't give myself credit for the few decisions that went well.