I double check. If I think that I'm right about something, I take a moment to consider "have I actually double checked this to make sure it's true? If not could I potentially humiliate myself by saying something verifiably false, or could I potentially spread misinformation? If I haven't checked, then I take the time to look into it first before trying to talk about it or make any claims about it. I try not to go based entirely off assumptions or gut feelings. If it turns out I was wrong, then I've learned something and avoided a mistake, if it turns out I'm right, then at least now I know for sure that I really am right. It also helps to get into the habit of actually thinking about what I'm going to say, whether it's actually right or not or just feels right without anything to back it up, and to be open to being wrong. I try to see the possibility of being wrong as a potential learning experience, which makes it less scary, and also makes it easier to not cling to the desire to be right all the time.