Once you get started, organizing is easy--the hard part, like when one loses weight, is staying that way! You have to find what works for you, and keep using it, or, if it isn't working, find another system right away, before things get out of hand again. The simpler, the more chance you have of staying neat. I like to put similar and used-together items side-by-side, and then label the boxes or bins or shelves. I just make fancy labels on my printer, and cut them out, and usually make hang tags. I'm big on labeling! That way, when someone else in the house/at work needs to find something, they don't have to make you get up and "find" it for them! For example, I have a decent-sized laundry room, so I store stuff on wall-mounted shelves. The one wall has white plastic bins (Sterlite, Wal-Mart, they come in many sizes), with hang tags I made for them. We buy paper towlels in bulk, so I decant them into 2 large bins. The same with trash bags and light bulbs. Since they're clearly labeled, hubby can find them. I also moved a small chest of drawers I wan't using under these shelves, so I can store tablecloths and cloth napkins (I entertain often). I borrowed a tip from Martha Stewart, and sorted my nakpins into large Zip-Loc bags (cheap ones are o.k.). I counted them, and then affixed a stick-on label with the number of napkins on it to the bag. This works well, as, when the napkins (and tablecloths) come out of the drier, I immediately bag the napkins. (And the cats can't lie on them, hairing them up!)
Another tip: if others live with you, try to organize from their point of view--what seems logical to you, may not to them. Perhaps ask them what they want/need, and work together to arrive at a solution.
How many out there enjoy surfing home organization supplies websites, and also get that gleam in their eyes? Hubby swears that do!
Good luck with organizing! Just remember, do a managable bit at a time--for example, tackle just 1 closet in one day. Don't pull stuff out of all the closets, and try to organize it all at once! Disaster time! Also, you'll get discouraged, and won't finish the job, and it will put you off organizing. Many people have to be in the mood for this--it's not exactly fun--so make it easy, and get that thrill from accomplishing something in a day!