You really must not feel guilty if, like last night, you have a break from trying to pack every waking hour with productive activity. Sometimes it is jolly good for you to get home, slob about in front of the telly watching non edifying rubbish like 'Four in a Bed' and 'Come Dine with Me'. Then might I suggest, a lovely long bath and an early night? You do not need to fret about all the creative endeavours that you left untouched. They will wait for another day when you are less knackered.
Lots of love