Read at your own risk. May contain criticism towards a particular group.

Perfectionists.
There's a few perfectionists I encounter in my life. I think they all carry the same trait: they're pain in ass. Firstly, they are cowards. They fear success, they fear rejection. They fear success because once they achieve it they are unwilling to lose it, yet afraid they're not up to standard. They are rather ignorant because they only accept their own point of view. They will exaggerate trivial matters. They felt that everything must be perfect or it is screwed. They definitely will feel 'not sufficient' if anything screws up.

I think this is one of the hardest group to be dealt with. Luckily my dad is not an extreme perfectionist. Well, heard of a case of an attitude Father today. Was researching how to deal with but turned out in vain. Sigh. Felt inadequate.

Through my experience, there's only two ways to deal with. First is to kept apologizing like a dog and coax him into old habits and accept that he couldnt be changed. Second is to confront and 'talk sense' into him once and for all with the probability of disharmony and cold war. Yet he will be a changed man and life will be not as tough as before, and might even deepen mutual understanding.