It’s conceptually possible, but practically impossible.
Skilled and experienced teachers helped me see things that would have taken decades (or never) for me to discover on my own.
Remember that every complex system (eg humans) discovered by science to-date, has a strong drive toward homeostasis preservation. This means that it fights to resist change. And so your unconscious is designed by evolution to RESIST showing you things that will be destabilizing or breach your sense of self.
Psychedelics are useful to circumvent some rigidity, but even those experiences are somewhat constrained by unconscious rules.