Business and Project Management: This is one of the most common contexts. It's used when a project plan is unworkable, a product prototype is poorly designed, or a marketing campaign has completely missed the mark.
Technology and Software Development: A team might decide to 推倒重来 if the existing codebase is a tangled mess (“spaghetti code”) that is impossible to maintain or update.
Creative Fields: An artist, writer, or designer might 推倒重来 after realizing their initial concept isn't working.
Personal and Social Life: While more dramatic, it can be used to describe making a radical life change, such as completely changing careers or, in extreme cases, ending a relationship to start anew.
Connotation: The feeling can be either negative (expressing frustration over wasted time and effort) or positive (expressing bold determination and optimism for a better outcome). The context determines the mood. It is generally considered neutral to informal.