The My Feed web part for SharePoint Online pages is a great way to personalize a site such that people only see the most relevant content that they have access to. This is how it works…
To add the My Feed web part, select the Web Part icon on a SharePoint Online page, and scroll down to the My feed web part. Select that option and add it to your page:

There isn’t much in the way of configuration. You can specify the number of items to show in the web part (up to 15) as well as whether SharePoint News items should be included. Once you’re done with the configuration, republish the page:

Now the page will show you the most relevant items that pertain to you. Keep in mind that the feed is personal to the person viewing the page, and they will not be able to see anything that they don’t have permissions to see:
