It was the office party yesterday. It started with a very pleasant lunch. I left about four, exhausted by holding conversations at high volume and starting to feel the tell-tale effects of what an old colleague used to call "wine poisoning". I dozed on the bus home and was in bed before ten. Obviously the younger members of the firm were still partying at five this morning. This hasn't stopped them getting in for nine o'clock this morning, which is admirable.
Age is the dawning anticipation of consequences. At the age of 18 you're too focussed on the pleasure to think about the consequences. At my age you think of the consequences before you think of the pleasure. The minute you think about the consequences you leave, a decision you very rarely regret. If you're worried that you might not be able to exercise your judgement when the time comes then you order a cab to arrive at an appointed time. If you're paying for it yourself you take it.
You never regret it.