BTDT. Spend a lot of time in the park. Get a part time job so they can go to day are (not really I worked because I had too). Try and insist on the nap for the younger - put him in his cot with something to do. Find a few DVDs you can stand. Encourage the children to play together although it won't work that well for a year or 2. Build a sandpit. Put a gate on the bedroom door so your older have quiet play time. Explain to the older that if he can't do what he is doing without your constant assistance then he is not ready to do it. Good luck.