1. A method for improving human emotional states comprising: monitoring a subject's respiration; determining one or more current breathing patterns for said subject, said one or more current breathing patterns to include at least one of a current respiratory cycle and a current respiratory sinus arrhythmia pattern; determining one or more optimal breathing patterns for said subject, said one or more optimal breathing patterns to include at least one of an optimal respiratory cycle and an optimal respiratory sinus arrhythmia pattern; prompting said subject to take a breath at a specific time to cause said one or more current breathing patterns to approximate said one or more optimal breathing patterns; and, providing feedback to said subject representative of said subject's emotional state.