That's probably part of it. I think the other part of it is our "inner voice" needs training and practice at it. Having two young children of my own, I can see

That's probably part of it. I think the other part of it is our "inner voice" needs training and practice at it. Having two young children of my own, I can see how upbringing and the way parents punish/praise their children plays a role in this. This is just my opinion and not based on any specific research, but think about how a parent typically curbs a perceived negative behavior. Ex. A child is eating dinner while standing up instead of sitting down. A parent will ask the child to sit down and possibly levy a consequence if they do not do it. Now think about all the other times the child ate at the dinner table and sat down (99% of the time). How many times was the child praised for sitting at the table as they were expected to? Similar examples can be found in how negative/positive reinforcement is implemented within the K-12 education system. The point being, we are likely trained from an early age to focus on criticizing our negative behavior(s) instead of reinforcing our positive ones.