Changing the email associated with your PS4 account can be crucial for security and accessibility reasons. If you have forgotten your password and need to change the email linked to your PS4 account, here are some steps you can follow:

1. Access the PSN Account Management website
2. Click on 'Sign In' and then 'Trouble Signing In?'
3. Choose 'I forgot my password' and enter your email address
4. Follow the instructions sent to your email to reset your password
5. Once the password is reset, you can log in to your account and update your email address

It's important to maintain good email security practices to avoid these situations in the future. Use unique and strong passwords, enable two-factor authentication, and regularly update your contact information to stay secure.