For me, I don’t turn notifications on at all.
@wardred , thank you for this excellent advice! Now I have turned them all off, as below.

You have made me think about the problem in a different way – maybe I call this as “The Trade-off Way”, in which it start to ask myself for two questions:
1) What is the most important to me? Getting timely notification or 100% concentration on watching CGCookie course videos?
2) If 100% concentration is much more important to me than getting notification, then would I like to make a trade-off by sacrificing my ability to get any future notification? (Note that, by sacrificing future notification, I may miss some important updates on my questions posted on the forum and updates on CGCookie.)
My answers to the questions:
1) 100% concentration is the most important to me.
2) Yes, I’d like to sacrifice anything to get 100% concentration on my work.
I believe that by following “The Trade-off Way”, completely turning off all notifications is the only logical step to solve the problem.
If I’ve put in a fair bit of work, and my mind’s starting to feel sluggish, I may take a break,
Yes, I feel in the same way. And, when my mind starts to feel sluggish, my self-discipline gets lower so that I am more inclined to find things, like social media or forum, to get instant gratification.
It can be really easy to spend a ton of time on the Gallery
Our future is unknown, but I want to make a promise that from now on, I will no longer post any of my works on the Gallery. I find that putting work into Gallery is not wise during my learning process, and it will make my mind sluggish.
maybe having Oreos around just isn’t the right move for you.
Oreo cookies. 😀
Yes, food addiction is widely spread in our modern society.