Set time restrictions for certain websites even on admin Is there a way to set time restrictions per day on certain websites like YouTube on my own admin account?  (preferably free)

I tried the application SelfControl , but there aren't many options, and I have to set it every time I want to block websites. 

If nothing, what other tips are there to limit myself from distracting websites?
If you visit YouTube or other time-consuming sites with your web browser you can install either WasteNoTime (Safari or Google) or LeechBlock (FireFox). WasteNoTime is/was inspired by LeechBlock.

The extension (I only tested it in Chrome) is adequately adjustable by using blacklists and whitelists.

By adding chrome://extensions to the block list you can even hinder yourself disabling or uninstalling the extension. 

These extensions are not infallible though: you can still just remove it using the Finder.