Some common challenges faced by beginners when building React projects include the following: 1. Understanding the React component lifecycle and how to use it effectively 2. Managing state and props within components 3. Handling events and user interactions within components 4. Managing and passing data between components 5. Integrating with external libraries and APIs 6. Properly structuring and organizing the application code 7. Debugging and troubleshooting errors that may arise during development 8. Keeping up with the fast-paced changes and updates to the React framework. To overcome these challenges, beginners can practice building small projects, seek help from the React community, and continue learning and staying up-to-date with the latest trends and best practices.