sit down

Something strange has started to happen in my life and I'm not quite sure how to handle it.
I have started to get a bit of.....spare time!!!!
Well, maybe not exactly spare time cos I always have a zillion things on my to do list. But I have more time than I used to have. Which is obvs just as good to someone who is used to running round like a crazy mad fool ALL THE TIME.
Take last night... I start work at 7.30 am on a Tuesday and Wednesday now, thanks to the over-enthusiastic teaching staff at the little one's school, so by 4pm I feel like I've done sufficient "proper work". 
Last night I fed the kids and did a couple of jobs then the little one went to play out with his mates and the big one assumed her usual position. (Lounging around on her bed with several electronic devises to hand and a bit of homework opened up to stop me nagging) I didn't have to set off to girls night for 2 hours and I had already done sufficient proper work to satisfy everyone. And so I found myself in a rather unusual position. I didn't know what to do! 
Obviously I could have cleaned something. But I hate cleaning. And I could have done some more proper work. But I didn't feel the need. And I suppose I could have just sat on my arse and watched telly. But after 15 years of doing 17 things at once I really can't just sit and watch telly anymore. 
So in the end I faffed about for about an hour trying to decide on the best use of my new found spare time. Then I did the ironing. All of it. To. The. Bottom. Of. The. Pile.
I really need to learn to sit and do nothing if this is to be my new life - post small children - don't I...