Insomnia patients report severe deficits in cognitive functioning. However, both behavioral and neurological research on these complaints remains remarkable scarce and inconclusive. The Dual Mechanisms of Control theory proposes that reduced cognitive efficiency might be caused by changes in the temporal dynamics of the neural recruitment of cognitive control mechanisms. Cognitive control reflects our ability to plan a new strategy, evaluate it, control its execution and correct possible errors. More specifically, it is hypothesized that insomnia patients have difficulty maintaining task goals to anticipate and prevent interference before it occurs. Based on this theory, we use a more dynamic approach in the current project in order to shed light on how insomniacs recruit cognitive control and under which circumstances its efficiency fails. Furthermore, our project aims to explore whether these biased patterns of neural activation are reversible and can be trained. By incorporating a cognitive strategy training, we will examine whether a shift towards a more efficient cognitive control recruitment can be established in insomniacs. With this project we aim to increase our understanding of the recruitment dynamics of cognitive control in insomniacs and its flexibility. Consequently, these insights can provide promising indications with regards to cognitive interventions in clinical practice.