The best way to manage those unsightly parts of ourselves is actually to befriend them. Yes, even that one you hate. Hating ourselves for a certain reaction rarely creates change. 

“Parts” language comes from a therapy modality called Internal Family Systems. We can really get into the weeds on this, but the basic theory is that we all have many parts of ourselves that are performing different tasks for our overall good. The parts always intend well for us, even if their actions seem to backfire. Often these parts of ourselves are working to protect us in some way and fear that if they don’t do what they are doing (pleasing others, being critical, being a perfectionist, acting suspicious, etc.) that something bad would happen.