Every day thousands of people travel across the world for different reasons. Whenever I've checked in for a flight, I've seen many travellers saying "I missed it" or "I forgot it", etc. This happens because while packing our bags, we miss so many important things.
The baggage packing isn't a big job but many people see it as a messy job. I'll advise you to always pack your bags according to your trip. The baggage should be different according to the duration（持续时间）of your trip. You shouldn't carry unnecessary things or more than what you need.
If you're going on a business trip of not more than 2-3 days, then make sure you don't carry more than a single bag. Pack 2-3 business suits , a night suit and also some casual (非正式的) clothes. You'll need casual clothes because you might get a chance to explore the place.
While on holidays of 5-6 days, you have to be very smart while packing your bag. First of all, check the climate of the place. If it's summer, then carry lightweight clothes and if it's winter, you have to pack a sweater. For holidays, pack all the small things you'll be requiring. But don't carry too many things.
If you're going to a relative's place, then you can be a bit relaxed because if you miss something, you won't have to worry as your relative will be there to help you. But don't forget to buy gifts for your relatives. If the gifts are fragile, then pack them in a hard box and always keep them in between clothes. No need to carry too many clothes as you can wash your clothes at their place. This will also help you to shop more and more.
