Greta Thunberg encountered numerous challenges in her climate activism. Diagnosed with Asperger's syndrome, she initially struggled with feelings of isolation and anxiety, but this condition also fueled her intense focus on climate issues. Her personal commitment led her to strike from school, igniting the global Fridays for Future movement. Thunberg faced significant opposition, including criticism from political leaders and media; however, her unwavering determination and articulate advocacy attracted a worldwide audience. Additionally, her experiences of mental health challenges underscored her passionate appeal for immediate action on climate change, making her a powerful voice for young activists.