Importing a certificate without admin access

If you are facing an error like this:

Simply do the following to import your certificate without admin access:

1. Open Keychain Access in Applications -> Utilities -> Keychain Access 

2. Highlight the "login" keychain, NOT the "system" keychain at the lefthand keychain list

3. Drag your .p12 to the "login" keychain. Type in the password you use to login to the server