Efficiency – Try to pack only the essentials and try to make each item serve the most functions for the least amount of weight or space.
Weight – Try to pack for the least amount of weight and try to make the pack weight roughly 25-30% of the hiker’s body weight. The more it weighs, the harder it will be.
Be prepared – Even though it is more weight, carrying equipment for the unexpected conditions is worth it. Weather forecasts are often unreliable and they don’t take into account weather patterns in the mountains – which have their own weather. Therefore extra layers, rain gear and other items are important.
Organization – Being organized is important so that important items are not forgotten. Also, separating gear into different waterproof bags helps keep things dry. Therefore the backpack is just a big bag full of smaller bags. Nothing should be totally loose within the larger pack.
Gear List – There is not one definitive or authoritative gear list for a backpacking trip. There are many packing lists you could find online. So much depends upon the type and location of the trip. I find it useful to think about the type of trip that is being planned and then organize the gear by groups and listed by relating them to all the rooms in your house.
Leave No Trace – Everything we pack in we have to pack back out. Minimize trash by minimizing containers and packing material.