To invent everything, start by identifying a problem or need in everyday life. Observe your surroundings and think about how existing solutions can be improved or what new ideas can be created. Research existing inventions to understand their mechanics and functions, which can inspire your own innovations. Next, brainstorm and sketch your ideas, focusing on practicality and feasibility. Build prototypes using simple materials to test your concepts. Gather feedback from others to refine your invention. Remember, persistence is key; many successful inventors, like Thomas Edison, faced numerous failures before achieving their goals.