When people set out on an adventure, one thing which consumes a lot of their time is the creation of a packing list. What to bring is an important consideration and that is why people spend so much time worrying about it.
Over time, I’ve worried less and less about what is in my bag. Now I can go pretty much anywhere in the world, throw stuff in a bag and be confident of my choices.
This is mostly due to experience and whittling away everything which is not essential. If something has been in my bag for more than 3 months without me using it, I usually get rid of it.