Boasting; How do i win?

I hate people with an inflated self-esteem.Seriously, i do. There are so many people boasting about their skills, their knowledge, their ability to assess any given situation,their intelligence and so on and so forth. Granted, many people do not even do it on purpose when they boast about,lets say how kind they are towards others during a conversation,yet i feel angry nonetheless. Maybe it is my low self esteem that hinders my correct judgment and maybe i should probably not even care. I do however, because i happen to know that for every good thing you boast about, there are another that many bad things you are not particularly proud of which however you somehow always fail to mention. Recently i had this conversation with my sister (who takes pleasure in boasting) and i was trying to convince her that as a human being (thus faulty by nature) she tends to often exaggerate about her virtues in a futile effort to ....uhm... advertise herself to others in a given interaction, me included. I was not actually accusing her of anything, yet she somehow managed to take offense at it and the whole thing concluded in a lousy mixture of yells and shouts.And here i am wondering; why can't we people understand two really simple facts? First and foremost, it is far more rewarding when someone praises your character on his own rather than you telling him.I mean, what's the point, what is there to gain? And if he is a loved person, you don't even need to mention anything, as (s)he probably already knows your strong points.And the second thing the vast majority of people fail to understand; for every ounce of "skill" you posess in doing something, there are thousands of people in the world who can do it better than you.*Sigh* When will people come to understand that they are not the small sweet warm centre of the god damn UNIVERSE and that not everything rotates and evolves around their big phat egos? (pun intended, big sis :) )
Moving on and concluding.Once you get caught in a conversation with such a person who keeps telling you of how kind, good, caring, loving, sensitive he is, you can't win.It is a long, one way road to boredom and wasted hours of your life.So do yourself a favor and stand up from your comfy chair, shake his hand goodbye and pretend you are busy.Do what i always fail to do because you know.I am toο sensitive and caring to insult others....oh wait. Yeah whatever.As i said, it's a lose-lose situation.

The glum (and modest) guy out.