A construct characterized by evocation, motivation, and transcendence. Specifically, inspiration implies motivation, which is to say that it involves the energization and direction of behaviour; is evoked rather than initiated directly through an act of will or arising without apparent cause; and involves transcendence of the ordinary preoccupations or limitations of human agency.
Thrash, T. M., & Elliot, A. J. (2003). Inspiration as a psychological construct. Journal of Personality and Social Psychology, 84(4), 871-889. doi: 10.1037/0022-35184.108.40.2061