Anil Seth and Sam Harris suggest an artificial general intelligence would like humans have to have an unconscious: Waking Up with Sam Harris #113 — Consciousness and the Self (with Anil K. Seth) https://youtu.be/T3QiFAcJnMg
In the Buddhist view, enlightenment means ceasing to create karma. But not, freedom from causes and conditions up to that point. An awakened person is still subject to the ripening of the karma they have accrued. The freedom they attain, is from that causing them suffering, or being part of a causal chain that causes suffering for others. Karma includes all causal phenomena, not just psycological. So say volcanoes and earthquakes are part of the causes and conditions that shield us from cosmic rays. We could only arise here on Earth because of such conditions, and awakening will not change that. This is parallelled by 'inherited' mental activity, instincts, habits, culture.
Our consciousness does a lot of things in the background, to give us a sense of being an agent in a situation - see Anil Seth's Ted talk 'Your brain hallucinates your conscious reality'. To be completely aware of some of these processes could be interesting in terms of understanding them, but to do it continuously would involve a kind of continuous recursion, with mental energy focused on watching all mental processess, and watching those etc etc. This would fundamentally get in the way of those processes, in the way of normal cognition.
Consider also the is-ought distinction. We derive motives from sentiments. Facts alone and rational analysis may aid in decision making, but as they talk about in Thinking Fast And Slow we risk 'analysis paralysis'. We have to be able to adapt to importance of decisions and relative risks, and weigh them against time and energy making the decision and the importance of doing so in a timely way. We are constantly dealing with incomplete information in limited time, and we develop our 'character' as a heuristic attitude from this. Understanding the nature of that, and whether it is good or bad or how to change it, may require observing ourselves in action; cooking rather than reading the recipe.
When we look 'under the hood' at how we make decisions, very often we come to a quick conclusion, which we then take time to justify. Most of our reasoning is post hoc https://www.skepticink.com/tippling/2013/11/14/post-hoc-rationalisation-reasoning-our-intuition-and-changing-our-minds/
Who we are now cannot become simply a rational decision in the moment. We have educated and trained our intuitions, our sense of contexts. Our senses don't just recieve passively, they are active and participatory in the reality we inhabit. Meditation and other practices for increasing self-awareness enable increasing glimpses of the machinery behind our minds. But we cannot wholesale reconstitute what makes us, that would be pulling ourselves up by the bootstraps. We can pay attention to what we feed our minds, how we educate our intuitions. Spiritual practices like developing empathy and compassion for instance. And leading an ethical life - lying for instance eats up cognitive capacity and drives creation of distinctive brain tissue types.
Meditation is about developing an attitude of constantly being present to what your mind is doing, and seeking insights from that into why. Long term meditators seem to experience higher rates of gamma wave activity in the brain https://www.ncbi.nlm.nih.gov/pmc/articles/PMC526201/ These are associated with the grouping of disparate sensations into perception of things as a whole, and sudden insights. An ability to quiten the brain may give more space to being able to understand itself and it's motivations.
In summary. We can gain insight into the mechanisms and processes, but not fully observe and control them without getting in their way. We can bring about long term shifts through consistent behaviour change, which can of course be rooted in insights experienced suddenly. Consciousness has a heuristic quality, associated with dealing with limited information in time limited ways, which may have to be seen in action rather than unravelled by observation.