One Less Headache by Zebrahead is a high-energy punk rock song addressing themes of moving on and personal empowerment. The lyrics suggest letting go of toxic relationships and finding liberation in cutting ties with people who cause emotional distress. It's a defiant anthem of self-respect, expressing relief and newfound strength after ending a burdensome connection. Key moments in the song highlight the protagonist's realization of their worth and the decisive action of walking away, making it a powerful statement on self-care and independence.