To think more critically about opinions, blogger Dustin Curtis shares his technique of asking three questions before formulating a quick opinion. It's good practice, so we don't have foot in mouth disease, and end up saying stupid things.
The idea is pretty simple. Your gut lies sometimes and you shouldn't always trust it. Curtis' solution is to check himself before he forms an opinion:
I've started forcing myself to ask the other person at least three questions about their opinion. Forming those questions helps me think. Often, my gut negative opinion changes. Sometimes, the questions change the other person's opinion. There is no downside.
The idea comes from Signal vs. Noise's five minute rule. Check out the source link below for more.