As an AI language model, I cannot provide real-time information or predict the future. My knowledge is based on information available up until September 2021. Therefore, I cannot provide you with the top 10 people making a positive difference in the world in 2023. The list may vary depending on various factors and future events. It would be best to refer to credible news sources or conduct research closer to that time frame for updated information on individuals making positive contributions in the world.