Confirmation bias guarantees that you can find hundreds of sources to confirm every thought that might ever cross your mind.
Does it prove your thought right? No.
And that is only because there are also hundreds of sources to prove it wrong.
I think confirmation bias also applies to the people we choose to surround ourselves with; the people we choose to befriend, love, work with...etc. We tend to surround/pair ourselves with whoever confirms our mindsets, doubts, struggles, and preferences, because this way, what we think about becomes normalized, it becomes okay. It makes us feel better about ourselves and what we believe in. It helps us be the coherent selves we'd like to be.
Choosing your surroundings driven by cognitive bias is good only if it confirms your good thoughts; your enlightened perspectives about things. It is however tragic if it confirms your recurrent fallacies or your systematic erroneous perspectives on life.
Realizing this duality can make you a better person every day.
It takes effort to stick around people who profoundly disagree with you.
It takes courage to listen to what they have to say.
It takes a lot of humility and vulnerability to decide to adapt and change.
Better hear more No than Yes.
Better disagree than agree.
Better grow than stay put!