By trying to diversify the sources from where you get informed.
It is known that people that only inform themselves on Facebook have a biased view and opinions.
This happens because they get continuously bombed with a certain type of information by the pages they follow.
In the recent months, I have been using Refind to mitigate this problem. It allows you to indicate your interests and hobbies and according to your interests it finds relevant content.
This content comes from diversified sources and the algorithm behind Refind tries to equilibrate it in order to mitigate the filter bubble and the “too many cooks” problem which verifies when there is too much content presented to users.
Finally, it also advises you to take some free time from the internet online presence with a relaxing screen :-)
This post appears also on my Quora answers profile you can find here