By resolving the conflicts of cognition and blinding themselves to those who seem insoluble to them.
Metacognition is not a panacea. It buries unresolved conflicts and approximate conceptions. To observe yourself solving problems may be to give yourself absolution for poor results.
This is why adult metacognition is of an inconsistent quality. It may prevent the consideration of solutions that seem relevant to the young person. Metacognition tends to become circular in aging adults, with self-observation congratulating the self and vice versa.
A young person is torn between two tendencies: 1) Gaining confidence through decisions made, blinding themselves to the
ir flaws.2) Realize that a problem is never definitively solved, that the context may prompt change the initial choice.
Metacognition promotes the second trend but disturbs the first. Since the two trends need to be balanced in personal development, it is not wise to question yourself too early or too radically, especially when it is someone else who encourages you to do so. You then lose ownership of your self-observation.
In the end, it is not metacognition in general that needs to be developed in young people, but interesting elements of metacognition in relation to each context.