I agree - working single parent living paycheck to paycheck with 2 kids-- is a huge accomplishment! celebrate that!
KISS - is what I am doing right now -- Keep it short and simple -- for everything in my life. I am not sure if it is an ADHD trait or just an additional thing I do - but I tend to make things really complicated (they say a perfectionist but it never feels liek that to me) -- and then I have organization and time management issues - so it gets overwhelming very quickly. So KISS is my mantra for now. I do short simple things -- like- just keep one room really really clean - I started with the kitchen. Now I have that under control, next the dining room. Now I am moving the living room this week. I do little things every time I go in - very quick short things - pick on ething up, wipe down the table, neaten the cushions etc. I am also trying to help my 17 year old daughter with this too - as she is also ADHD (I think we all are - what a mess!) For us ADHD it's like doing everything underwater.
Good luck - you are a champion!