While many elements of paceño life (notably traffic patterns) are somewhat lacking in consideration for others, interpersonal interactions typically display a valuable and careful attention to details of courtesy.
If you visit La Paz, you will find people (in shops, offices, taxis, etc.) respond best when you greet them before launching into the business at hand. It only takes two seconds to say “Buenos días, ¿cómo está?” (good morning, how are you?) but sets a tone of respect.
When entering a restaurant or dining hall, people here will often say “Buen provecho” (the Spanish version of “Bon appetit”) to those they walk past, even if they are complete strangers. After eating, they say “Gracias” to the people who have shared the meal with them. I will miss these details of courtesy and commensality!