Automating repetitive tasks is crucial for online business success, as it frees up time to focus on growth strategies. The author, Shabbir Nooruddin, shares his experience with automating processes such as collecting emails for outreach, scraping search result data, and sending outreach emails. He uses Google Sheets, Zapier, and other tools to automate tasks, including setting up automatic contact saving, emailing contacts, tracking published content, and developing a system to support growth. By implementing these automation strategies, business owners can increase efficiency, reduce time spent on menial tasks, and focus on overall growth and success.