It is not uncommon for a person suffering from this condition to go from happy to sad back and forth many times during a day, or a particular mental state can last for months before changing.
Since you never know when the mood is going to change, making plans for doing anything becomes difficult.

The latter issue should not be surprising. The imagination function inherent in suggestions creates a specific and measurable neuro-physiological change starting with the R-OFC. This then affects specific parts of the thalamus, which in turn communicates with the hypothalamus and pituitary gland, the master endocrine gland.

This signals a cellular reaction as the parasympathetic autonomic system has been activated.