Don't Procrastinate od Daniel

Site Blocking: Create a blocklist of distracting sites with support for path-based patterns (e.g. <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/7da81a984e73cf21c51a9755f5029f42b4de3a10bc78d0071b13915493c8ff18/http%3A//youtube.com/shorts/" rel="nofollow">youtube.com/shorts/ )
Interstitial Page: Forces a pause before visiting blocked sites with a configurable wait timer
Daily Limits: Set per-site limits on opens per day and minutes per day
Intent Declaration: Require typing what you plan to do before proceeding
Dynamic Toolbar Icon: Shows a sad face when you're on a blocked site

Adds a confirmation step before opening distracting websites.