As a ReactJS developer, here are some advice to consider:

Keep up to date with the latest trends and updates in the React ecosystem. Attend meetups, conferences, and read the latest blogs and articles.

Focus on creating reusable components that can be used across different projects. This will save you time and make you more efficient as a developer.

Understand the principles of Redux and the importance of state management. Redux helps to manage the state of your application, making it easier to debug and maintain.

Learn to write clean and readable code. This will make it easier for other developers to understand and maintain your code.

Practice good debugging techniques. Use tools like React Developer Tools and Chrome DevTools to debug your code.

Use best practices in your development process, such as code reviews, automated testing, and continuous integration and delivery.

Don't be afraid to ask for help or advice from other developers. Join online communities like Stack Overflow, Reddit, and GitHub to learn from others and share your knowledge.

Keep an eye on performance. Optimize your code for better performance, as slow performance can be a major issue for React applications.

Finally, be patient and persistent in your learning journey. React is a complex and constantly evolving technology, and it takes time to become a proficient developer.