emotion is the rendering of instinct into action. Humans have evolved a sort of buffer between programmed response and stimulus, the ego. This buffer gives us time to construct simulations in our minds and possibly stumble upon innovative behavior. Over time this ability has become highly evolved and as a consequence humans are highly complex social animals. We literally have a "virtual reality" program, the human imagination, running in our mind at all time, even during sleep (dreams).
The upshot of all that is this is that the human mind is in a state of extremely delicate balance and this state can become easily disturbed by our experiences, inner and outer, causing disorder.
Try meditation to align your chakras, just like tuning a musical instrument