Presented are systems and methods that analyze an individual's state based on selected criteria, and then adaptively provide stimuli to affect the individual's performance compared to established benchmarks and pre-set plans. The methods or systems can provide audio and/or tactile inputs to a human subject to obtain a specific performance state. A music or sound selection engine considers the sensory and environmental inputs and selects the appropriate music or auditory stimulus, with the intent to reach a desired state of flow. The methods and systems can employ multiple measurements of personal data that can correlate to the emotional state of a subject. By manipulating stimuli delivered to an individual, ultimate performance can be improved over various planning horizons.