Do you have 1 or 2 slots of child-free time a week? If 2, would suggest setting aside one to do all your chores/tasks and then using the other for 'me time'. If you only get one slot, could you divide it up? e.g. 2 hrs at the beginning to do something just for you, then rush around doing the chores?
What do you enjoy doind and find relaxing? E.g. long hot bath with face mask etc. and book/magazine (my fave activity), going out for coffee somewhere nice, going to gallery/library/museum nearby, going to cinema, or just sitting in and doing teh crossword or watching your favourite tv programme... you deserve a little relaxation and a treat every now and again and the ironing can always wait (says she who never irons if she can help it ). And if you plan it - I will do this next week - it's more likely to happen.