Errors are often perceived as undesirable events to be avoided at all costs. However, a growing body of research suggests that making errors is, in fact, beneficial for learning. Building on human resource development literature, the present review proposes a 3P framework of approaches to errors during learning: prevention (avoiding or observing errors), permission (allowing errors), and promotion (inducing or guiding errors). This framework is applied to examine and integrate the empirical evidence on errors that have been commonly investigated in cognitive, educational, and applied psychology research. The psychological mechanisms of each error approach are discussed, and implications for education are considered. This review then concludes by highlighting the ways in which the various error approaches interact with learner characteristics and learning contexts, as well as discussing the role of feedback in error correction and proposing directions for future research toward understanding how errors can be optimized in learning.