Inventiveness does not guarantee novel solutions. It guarantees solutions that are new to you, and only sometimes, new to the world. It is born of curiosity and contributes to competence.
Are things the way they are because they could not be otherwise? This is not always true. How could they be different? What do we want?
Sometimes our investigation of a matter is so limited that it is nothing more than the willingness to be perceptive.
Some say that important inventions require a lifetime of study. Then why do so many specialists have a history of inventiveness that began in their early youth?
The frame of mind is obtainable. Investigate! You might start with your memory.