There are several ways to put your messages private, depending on the platform or application you are using. Here are some examples:

1. Use end-to-end encryption: End-to-end encryption ensures that only the sender and recipient of a message can read it. This means that even if someone intercepts the message, they won't be able to decipher it. Some examples of platforms that use end-to-end encryption are Signal, WhatsApp, and iMessage.

2. Use a password-protected document: If you want to share sensitive information, you can create a password-protected document and share the password only with the intended recipient. You can use software like Microsoft Word or Google Docs to create the document and set a password.

3. Use a secure messaging app: There are several messaging apps that prioritize privacy and security, such as Signal, Telegram, and Wickr. These apps offer features like end-to-end encryption, self-destructing messages, and the ability to verify the identity of the person you're talking to.

4. Use a virtual private network (VPN): A VPN encrypts your internet connection, making it more difficult for others to intercept your messages. You can use a VPN app on your phone or computer to encrypt your messages while you're using public Wi-Fi or other unsecured networks.

5. Use a secure email service: If you need to send private messages via email, you can use a secure email service like ProtonMail or Tutanota. These services offer end-to-end encryption and other security features to keep your messages private.

In summary, there are several ways to put your messages private, depending on the platform or application you are using. By using end-to-end encryption, password-protected documents, secure messaging apps, VPNs, or secure email services, you can ensure that your messages are kept private and secure.