That's one of the best bits of advice of the lot. We've all done it. It doesn't take long to look at a pile and think: "Why the hell did I bring that... it's useless weight". More so if you're doing some climbing. Postage is quite cheap and it doesn't matter when it arrives to wherever you send it. Sometimes it's a pleasant surprise when you get back home. "Oh, I'd forgotten I had taken that" shows more than you didn't need it in the first place.

It takes a while, but we all pare down to our needs and comforts. For some that's not much. For others it may be a lot. The key word is comfort if you are touring for pleasure and sightseeing, not to break records.