Make a strategic decision to dress in fewer colours. Presumably, you already have a handful of colours that you wear more frequently, colours that suit you. Focus on these and you will need fewer matching purses, scarves, shoes and belts.
When making your decision, be sure that your purchase not only looks good on you but that it is also coordinated with your existing wardrobe. A newly bought item sitting on a hanger on its own because it has no friends; well, that is just sad.

Avoid sales if you can – chances are you will buy a slightly ill-fitting item because it is cheap, or you will buy items that no one else wants, clothes of low quality. Ask yourself this: if you wanted it in the first place, why didn’t you buy it at the full price? A good rule of thumb is to only buy an item on sale if you had planned to buy it anyway.

Hang on to your favourites, make the necessary alterations. A small hole or tear might be mendable. If not, you could perhaps put on a patch or a similar application. Move a few buttons for a better fit. If the cuffs are frazzled, shorten the sleeves. If your trousers are stained, make a pair of shorts. Simply: wear your favourites longer.