Two times now after coming back from my holiday I have made a massive cock-up on a roundabout. First was yesterday when someone wasnt exactly going slow but they were taking care at going around a roundabout with their signal on. I was approaching and for come reason thought in my head "I have right of way" and cut in front of the guy. Immediately after, I felt guilty and at the next set of lights, appologised to the guy. He was okay with it. The second was today as I was behind a car who entered the roundabout, I just didnt look around myself at all. I was concentrating too much on the planes at the Rhyl Airshow. Once again I appologised and explained that I wasnt concentrating and then when I turned around, the traffic had moved off. I muttered to myself "NOT CONCENTRATING!". I am utterly devastated that I am being this careless and inconsiderate. Why have I forgot all of a sudden? When cycling in France I was taking a lot of care on the roundabouts because the French have a habbit of just darting out and not even touching the brakes. I need a good slap and to seriously concentrate more.