"We all tend to believe the stories that support our own views." Check this out (it's a great list of how we only see what we already believe):http://en.wikipedia.org/wiki/List_of_cognitive_biases
I try to do a few things to keep my own biases down to some extent. My mom always said, "Consider the source." "Left" and "right" are pretty much just "false flags." I already know that media, whether "left" or "right" is trying to convince us of certain biases that company has (and even deeper, what its owners and sponsors want you to believe), whether MSNBC or FOX. So I tend to immediately put a warning flag for myself for anything I see on TV or hear on the radio, because there are very few real reporters anymore, they are mainly demagogues (trying to whip people up to believe what they want them to believe, for whatever reason: power, influence, money, etc). Mainly they manipulate facts to elicit emotions, because one you get into someone's emotions, they tend to stop reasoning and can be made to do whatever.
I watch them all pretty much: FOX, MSNBC, CNN, PBS, PIVOT, the old three networks, etc., in order to cancel each other out on their biases to some extent. It is a start. When FOX and MSNBC agree on a fact (something that happened, like Benghazi, or that so and so won an election, it probably happened, but then the SPIN comes from both sides, and I separate the SPIN from the event itself. The reality is, unless I was there, or have a primary source, it will take some real analysis to try and tease out what the truth might be.
There is so much thrown at us constantly, who has the time to sort through it all? So mostly I remember to always remember my own biases, try to see it from the opposing point of view, and really think about it. And if I don't have the time to do so, I realize I am ignorant, and can be manipulated as much as anyone else.