I think it boils down to: be Norwegian, i.e. have an already well functioning government and relatively egalitarian society.

Botswana figured it out too.

I don't know much about Botswana (I've been to other nearby countries in Africa, but not there), but just from looking at things like it's Gini index I'm skeptical. It definitely appears much better off than its neighbors though and seems to be on a good trajectory.

Botswana is generally considered one of the best-run countries in Africa, along with the island nations (Cape Verde, Seychelles, and Mauritius) and the countries in North Africa (Morocco to Egypt). For example, it's 5th in Africa the Human Development Index (behind Mauritius, Seychelles, Algeria, and Tunisia--and ahead of South Africa). In GDP (PPP) per capita, it's 4th, behind Seychelles, Mauritius, and Equatorial Guinea.

I know that, but being one of the best run countries in Africa is very far from being Norway, as I was getting at with the Gini index.