Learning to live with your flaws is what life is!
Nobody is perfect.
Not even Natalie Dormer.
Every one of us has at least one flaw which we may or may not know, but it is there.
Some of us are lazy, some procrastinate too much and some are downright psychopaths. But the point is, if one does not accept himself in spite of their faults then no one else will.
Knowing one's defects and striving to change them in order to become a better person is what separates one from the crowd.
But there's still a catch.
Say someone is lazy. Lets call him Jon Snow.
So Jon Snow is very lazy and 'he knows nothing' about it. But one day another guy points out to him of his laziness. Lets call him Bran.
After Bran tells Jon about his shortcoming, he decides to change himself.
He starts working and does stuff that he wouldn't have done before due to laziness.
As a result, he is always doing stuff and "knows nothing" of the outside world. Which inevitably created another fault in him.
He became a work-a-holic.
As we can see, we need a balance for everything. Be it lifting weights, cracking jokes or even guarding Castle Black. If there aren't enough men, the wildlings win, but if there are too many, food becomes scarce as winter arrives.
So don't worry too much if you are not perfect but at the same time don't turn a blind eye to your defects.
As a wise man once said,"Don't take life too seriously. You will never get out of it alive."
(Please get the puns.)