The invention relates to a system, for monitoring and optimising a performance of at least one human operator, comprising--monitoring means (2) for collecting performance parameters, representative for the status of the performance;--processing means (3) for assessing the operator's performance on the basis of said collected performance parameters and for providing the human operator with guiding instructions for improving said performance; and--communication means (4) for communicating the guiding instructions to the human operator, wherein the performance parameters comprise at least one physiological parameter of the human operator, at least one interactive parameter, representative for any interaction between the human operator and his environment and preferably at least one contextual parameter regarding the human operator's direct environment.