I agree with everything you said in this post. I had to learn along the way though :-)
I used to be attached to too many items that aren't that important, but since we left our home country with only a few suitcases of our stuff, I've learned to live much more minimalistic. And I also learned to pack only cabin luggage when traveling where I used to bring so many clothes that I didn't need being away from home. It really makes traveling so much easier... I've learned that you don't need all inclusive hotels to have a great holiday, but better seek the good deals of a nice apartment or hostel with private room and eating where the locals eat. That saves a lot of money. I got quite good at finding deals actually, and therefore we can now afford to go away for a few days more often.. Your post is filled with great tips!