Create a new directory for your Node.js application.
Navigate into the new directory.
Run npm init -y to initialize a new Node.js project with default values in the package.json file.
Create a file named index.js (or any other entry point) in the root of your directory.
Write your Node.js application code in the index.js file.
Run npm install express to add the Express framework to your project.
Create a file named Procfile in the root of your directory with the content web: node index.js. This file specifies the command to start your web server.
Run npm install -g heroku to install the Heroku Command Line Interface (CLI) globally.
Run heroku login and follow the prompts to log in to your Heroku account.
Run heroku create to create a new Heroku app and link it to your local git repository.
Run git add . to stage all changes for committing.
Run git commit -m "Initial commit" to commit your changes.
Run git push heroku master to deploy your Node.js application to Heroku.
Access your deployed application using the URL provided after the deployment process is complete.