Nope, we can't snap out of it because it is not a question of a problem with our behavior.
Our behavior is a SYMPTOM of the chemical imbalance in the neurotransmitter part of our brain.
My favorite example: Take a "normal" person and inject them with a syringe full of chemicals. Then, just as they reach their brain tell them to "act normal".
They can't - anymore than we can override the imbalance going on chemically in ours.
That's where meds come in until they come up with something better. There has been some preliminary luck with a form of MRI - keep your fingers crossed!!
By the way, we almost ALL have periods between highs and lows where we are "normal". That's classic for Bipolar Disorder - what's different is how LONG between moodswings!