I agree with Frankly My Dear in regard to picking your battles. It used to be very easy for me to be overzealous about finding flaws in others (and myself), and if I let that judgment run unguarded, I would deem every human being downright insufferable. Even those who I do genuinely like would fall under that category. I had to 'have a meeting' with myself, and figure out what traits and actions that I truly despise / could not tolerate. Anything else, I would swallow my nitpicky ways and make nice. Eventually, that became something natural for me. It was no longer 'making nice', but I could enjoy the presence of others without making a mental list of perceived slights, disagreements, value conflicts, etc.