There is no "norm". People living in high COLAs will spend more. People with more disposable income will spend more. And different people have different priorities as to where they spend their money. If you feel as if you are overspending, then you probably are. Comparing your spending habits to those of someone who makes more (or less) than you is pretty useless.
There are people on this board who shop thrift stores instead of buying new clothes. There are people who only eat organic. Some people don't spend a lot on cars but spend a considerable amount on travel. There's just no "average" budget. However, there are general guidelines for budgeting that should help for anyone, regardless of where you live or how much you make. Perhaps using those guidelines would be a better way to gauge where you should be allocating your money.