If you're aiming to become a successful software developer, these are the top 5 programming languages you should consider learning:

1. JavaScript:

• Widely used for web development (both front-end and back-end) and building interactive websites.
• Has a vast ecosystem and numerous libraries and frameworks like `React`, `Angular`, and `Node.js`.

2. Python:

• Known for its simplicity and readability, making it a great choice for beginners.
• Used in web development (Django, Flask), data science, machine learning, and automation.

3. Java:

• Remains a cornerstone for building Android apps and enterprise-level applications.
• Offers strong support for object-oriented programming.

4. C# (C Sharp):

• Primary language for developing Windows applications, games using Unity, and enterprise software on the .NET framework.
• Has a growing presence in cross-platform development with .NET Core.

5. SQL (Structured Query Language):

• Essential for working with databases, crucial for backend development.
  Learn SQL to manage and query data effectively.

Remember, the choice of programming language also depends on your specific interests and career goals. It's a good idea to master at least one language from each of these categories to broaden your skill set. Happy coding!