Turn everything upside down

Not in the literal sense, of course. But you can get a good idea in this way - by looking at the question at an absolutely unexpected angle, often - diametrically opposite. Take any problem that is in the world today, and think about how it can be solved. Not from the standpoint of existing approaches, but in general. This is how the Academy of Khan appeared - as a response to the problems existing in the sphere of education and bottlenecks.
This is how Airbnb emerged, which challenged the traditional rental of housing and changed the notion of travel. Of course, you should not expect that you will manage to solve all the pressing world problems. But often it is precisely getting rid of the habitual attitude of thinking like "it should be so and nothing else", helps to find great ideas. By the way, this advice can be used as an exercise for the development of creativity: try every day to find 10 absolutely new ways of doing something. It can be anything, like new ways of getting education, and 10 new spiritual and religious practices.