Buy quality clothing that will last a long time. Change accessories to an old outfit rather than buying a new outfit. Add a scarf, change the blouse, add a pin, etc. When you go window-shopping leave your checkbook and credit cards at home. Don't confuse shopping with fun.
Shopping is serious business.
Keep your good shoes at work. Wear older shoes for walking to and from the office. Wear old clothes for messy or dirty jobs. Buy used items rather than new when you can. Set a timer when making long distance calls and limit your calls.