Overpacking is something many struggle with, me included. When it comes to attempting to not overpack here are some things to keep in mind.
1. Be realistic about what you are going to wear.
You can only wear so many outfits in the period of time you are going to be somewhere. So maybe pack an extra outfit or two at most but also you want to leave extra room in your suitcase just in case you want to buy something while you're there!
2. You don't need your whole vanity.
When it comes to skincare, makeup, and hair care, you simply do not need it all. Pack the necessities, maybe bring a straightener and a curling iron but opt for air-drying your hair so you don't have to bring your blow dryer.
You also don't need to bring all the makeup you own including a bunch of pallets. Be realistic on what makeup if really any you'll wear on your vacation.
3. Have an idea of what you are doing ahead of time.
Having planned activities makes it easier to pack. Whether you going on vacation or moving to college. Have an idea of the things you need like sneakers, hiking boots, a bathing suit, a ski jacket, and things like that where you may not need them all year round.
4. Make a list.
Making a list helps you plan out everything and make sure you have all the things you need. That includes remembering your phone charger and toothbrush. Things that seem to be easily left behind.