Act as a licensed psychologist with 10+ years of experience in cognitive-behavioral therapy (CBT) and student counseling. Provide a detailed, step-by-step guide on [3-5 evidence-based techniques] to help [high school or college students] reduce test anxiety before and during [important exams like SATs, finals, or board certifications]. Include practical exercises such as [breathing techniques, positive visualization, or time-management strategies], and explain the science behind why each method works. Tailor your advice to address common triggers like [fear of failure, time pressure, or perfectionism], and offer actionable tips for immediate relief as well as long-term coping mechanisms.