>Is there a way
There is always a way.
The question is, what are you willing to give in order to make it happen?
And consider this: your current manifestation on this earth is in itself an illusory part of your higher form. So of course it is possible, but with every action, there is a reaction. There are forces that may not take too kindly to that sort of thing.
Keep in mind though - even if you were to nullify your own personality, there are ineffable parts to -you- that will survive any form of degradation. The consciousness would be the same, just with a different frame of reference.
I am not responsible for any methods you choose to do such a thing, but in my experience, a good way to shave off parts of one's personality is extreme isolation in a dark space for several days without any form of light. I've also heard that taking large doses of specific psychedelic drugs can have a similar de-realization effect, If you're looking in ways of spirit, I am sure there are plenty of demons or other astral entities that would love to feast upon your mental state, but that might not be what you want in the long run. You could overcharge yourself with an excruciating amount of negatively-charged energy, but that might even hurt or kill you.
I suppose that if you were to travel far enough into higher astral planes that you might find an entity or two willing to replace your consciousness in your body with its, but you'll have to manually find your higher self after that, or else you might wander through existence for all eternity until your higher self decides to butt in. It's up to you. There are…other…methods as well, but it's neither my place nor my prerogative to mention things like that as in doing so every person who is privy to such information may be affected adversely.