Heuristics

A rule of thumb procedure or formula that has worked in the past and may guide problem-solving in the future.

Reference:
Snyder, C. R., Harris, C., Anderson, J. R., Holleran, S. A., Irving, L. M., Sigmon, S. T., ... & Harney, P. (1991). The will and the ways: development and validation of an individual-differences measure of hope. Journal of Personality and Social Psychology, 60(4), 570-585. doi: 10.1037/0022-3514.60.4.570.