Actually, I think this is VERY GOOD advice and I intend to appropriate it into my series of secular atheist right-thinking sermons.
We exist in THIS space at THIS time. We are unavoidably, by virtue of our existence, PART of this world.
As individuals we have very little power to change much about this world, but through the news media we are continually barraged with "news" - almost never happy news but news about new terrors, new outrages, new atrocities about which we can do nothing.
The solution, my friends, is to take a "news purge diet." For five days, listen to NO news and thereafter restrict your exposure to the news as much as you possibly can.
While doing this, try to increase your awareness of your local and virtually local environment. ACT locally to improve the situation of those near you.
By doing this you can be in the world but no part of the world.
Hail Eris!