i would start by making your schedule (both for your own time and for the children in your care). make space in your schedule, even just 30 minutes a day, for "projects". every day. it may take today and tomorrow to work out a good routine. on friday during your "projects" time, maybe your project can be developing that project list alyantavid is talking about, and prioritize it. then you'll know, during your projects time next week, which task you are focusing on first. personally, for me, that would be budget and bill pay, but that's because i can get myself into trouble if i'm not on top of that. if you want or need to focus on decluttering, then make a priority list of which rooms you are going to work on and stick with that room until it's done (to your satisfaction) before moving on. obviously, that doesn't mean you neglect that basic daily tasks of housework like clearing off the table.
what are your weekends like? do you have a couple hours saturday or sunday when you could focus on the toys and where you would like things to be? if so, i am a big fan of asking for help. call one or two friends over who are good at this sort of thing, who can be supportive and non-judgy. i would want to do one of two things with them. either pick the room that is bothering you the most (which will make the most positive difference to get it done) and bust it out, *or* ask them to help you walk through your whole house and make a plan of attack (what is each room for, what belongs there, what doesn't, what repairs or furniture does it need, etc) and that priority list.
if you aren't sure where in your house you should focus first, i think this is a good, fun little assessment to help figure that out:
http://www.fastfengshui.com/ffsbook_powerspots.htm
i have sooooooooo been there, off and on throughout my adulthood. things just get out of hand sometimes.
you'll get a good handle on things. definitely make that list - oh and i'm a big fan of calendars, too, paper or on the computer. writing it all down will let you break it into manageable pieces and give you a feeling of control over the situation. good luck!
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