This is about as useful as saying "How about you just eat less?" to someone who is struggling with their weight — that is, not useful at all. There's a reason only 15% of overweight people manage to make any progress towards weight loss, never mind any meaningful progress [0]: changing habits is hard, and as a society we haven't found a good way to systematically address the problem. Condescending quips do little to help in that regard.
What is it that you're struggling with? Then we can have someone that doesn't struggle with that issue tell you that you just have to do this or that. Afterwards your struggles will be a thing of the past!
Oh and do disable all notifications. Even if they don't trigger a newsfeed addiction, they're interruptions. You don't want those.