I can totally understand. I think you need to learn some basic parenting strategies and such. I'm a work-in-progress myself. I have a friend with four boys ranging from 4-12, and they all share a room. In order to get them to go to sleep, she stays in the room with them after putting them to bed to make sure that they go to sleep. The oldest has to be up early to catch the bus before 7.
Also, I would highly recommend trying out the flylady. She has a free internet coaching thing, where she sends you an email daily with a list of tasks that will make your life run smoother. For instance, before bed she has the "before bed routine", where you lay out your clothes for the next day and have everything you'll need in the "launch pad", so that you're all ready to go in the morning, and the same goes for the kids.
Also, I would recommend any books by John Rosemond to help you get a handle on discipline. I don't know where I would be without him. If they are fighting over a toy, absolutely take it away, calmly. He also teaches to "strike when the iron is cold", meaning to expect the worst (how they normally behave) and have a plan in place, and tell them what the plan is. Then, when they are doing whatever awful thing they are doing, act on the plan. His book the Six Point Plan for Raising Happy Healthy Children is excellent. He has a new book out on discipline, but I haven't read it yet. The six point book makes a big point of putting your marriage first and foremost. Maybe read it with your husband so that you can both be on board, and both decide what strategies to put in place and can both be consistent in discipline. It sounds like you both just don't know what to do. Also, like the flylady says, go to bed at a reasonable hour so that you can get up in the morning (get up 15 minutes before everyone else so you can get a headstart on the day, which makes a huge difference). And, John Rosemond says to get the kids up half an hour sooner if they need that much more time to dawdle and fool around. Have them go to bed sooner so that they can - I know, easier said than done. If my kids aren't going to sleep, I'm not afraid to go in and administer some appropriate swats (John Rosemond says 1-5 swats with an open hand on the bum only is appropriate).
Anyway, do get some help (read the book, start doing the flylady) and start going on dates with your hubby if you aren't already. Best of luck!