Principle 1: Trigger selfish motives
The Norwegian Government doesn't want to turn you into an eco-fanatic. Neither don't try to convince you to make the transition because of the environment. They just make it much more attractive for you to drive electric. The brilliant part of their strategy is tha they didn't stop at your typical tax cuts - although they are enormous. They turned the benefit in something far more system 1: Electric cars get a free passage at the Toll Gates, get free parking in a lot of municipalities and get permission to drive on the bus lane. In other words: they get to experience the benefits daily. This brings me to the second principle.
Principle 2: feedback
A driver of an electric car gets constant positive feedback on their behaviours. Every time they use the bus lane to skip traffic jam, or every time they pass a toll gate for free, they get a chance to look at all those combustine engine suckers. They get visual reminders on a daily basis of how stupid one must be to drive the old school way.
The opposite is also true: Every time you get stuck in a traffic jam, and you see a Tesla or an electric Kia legally using the bus lane to cut you off, you get a painful reminder that your not part of the priviledged class of the country.
Principle 3: Take away barriers
The big challenge is still to tackle "range anxiety". More than often, people in Norway buy an electric car for their second car, with which they commute to work. For the long distances, they still don't feel secure enough that they could travel comfortably without having to freak out about finding a re-charge station on time. Norway is investing rapidly in charging infrastructure. Ability is not a detail.