Yes your soul can change characters (parallel realities) if it is aware. An aware soul is not bounded by any particular reality and can change characters at will. Your soul gets stuck to one particular reality as Maya (Illusion) keeps your attention captivated. Here is the real cache as it is this attachment to the material world that keeps the soul bonded to the character version of you experiencing sad realities.
An eternal soul can experience as many characters (same versions of you experience good realities in other dimensions) as it like. If you can learn to detach from the mind, your soul can easily shift realities and this is where we resist. Our processions, family, friends, and experiences feel so own that we remain stuck to unpleasant realities. If we can learn to detach, we can instead see them and our character experiencing better realities.
An unaware soul can also change characters by default when he experiences extreme pain and loses interest in this “Moh Maya”. This transition is seamless as while changing characters; it also accepts the memories of the new character as his own and builts up an illusion that he experienced the same.
Did you get the cache here?
Your soul is living an illusion. When you feel pain, you are living the pain this character is destined to experience. Each character is like a separate parallel road with some forward and past route. Your soul can change the routes seamlessly to better realities.
Coming to my perspective, I feel detachment is the key here. Live the character as if you are just a free soul. When unpleasant realities start rolling in just detach and learn to change realities.
Immortal Talks Book II