"Think for yourself" is a powerful phrase that encourages individuals to form their own opinions and make independent decisions. However, there are several synonyms that can also inspire this same mindset. One such phrase could be "use critical thinking skills," which highlights the importance of analyzing information and considering multiple perspectives. "Be an independent thinker" emphasizes the idea of rejecting conformity and avoiding groupthink. "Exercise your intellectual independence" is another alternative that stresses the value of free thinking. Ultimately, whatever phrase is used, the goal is to inspire individuals to trust their own judgment and take ownership of their beliefs and actions.