1. Go to Structure and then Views. This will bring you to the administrative overview of all the views that have been created. Click on Add view to create a new view.
2. Set the View name to My Content Reference View, and retain the current View settings configuration.
3. Do not choose to create a page or block. Click on Save and edit to continue working on your view.
4. Click on the Add button to create a new display. Select the Entity Reference option to create the display:

5. The Format will be automatically set to Entity Reference List, which utilizes fields. Click on Settings next to it to modify the style format.
6. For Search Fields, check the Content: Title option and then click on Apply. This is what the field will perform the autocomplete search on.
7. You will need to modify the Content: Title field to stop it from wrapping the result as a link. Click on the field label and uncheck Link to the Content. Click on Apply to save the field settings:

8. We will then use a contextual filter to limit the results to the currently loggedin user. Click on Add from Contextual Filters in the Advanced section.
9. Select the Authored by: Content option and click on Add and configure contextual filters.
10. Change the When the filter value is not available setting to Provide a default value. Select User ID from the logged in user for the type value. Click on Apply to configure the contextual filter.
11. Click on Save to save the view.
12. Go to Configuration and then Account settings to be able to manage fields on user accounts.

 

13. Add a new Entity Reference field that references Content, call it Highlighted Contributions, and allow it to have unlimited values. Click on the Save field settings button.
14. Change the Reference type method to use View: Filter by an entity reference view and select the view we have just created:

15. Now, when a user edits their account, they can reference only content that they have created in this reference field.