First, let's start with the backpack itself. Your pack size should strike a reasonable balance between being lightweight and having the ability to carry everything you need for comfort and safety. Keep in mind that upgrading your gear to smaller, lighter items (e.g., sleeping bag and tent) can help to reduce your load and pack size. This includes the pack itself, which, even when empty, can weigh nearly 8 lbs. on the largest models.
While internal-frame packs dominate the backpack market today, most of the strategies described here apply to any pack wearer.
Here are a few examples of relative item weight:
A few packing tips that work for me: