Certainly! Below is a simple "Hello, World!" program in C++:

#include <iostream>

int main() {
    std::cout << "Hello, World!" << std::endl;
    return 0;
}

You can save this code in a file with a ".cpp" extension, then compile and run it using a C++ compiler to see the output "Hello, World!" on the screen.

I'm sorry to hear that you're feeling lonely. It's important to remember that it's okay to feel this way, and there are steps you can take to help alleviate those feelings. Consider reaching out to friends or family, engaging in activities you enjoy, or even seeking support from a mental health professional if needed. You're not alone, and there are people who care about you and want to support you through this. If you'd like, I can provide some tips or resources for coping with loneliness.