Poker has one rule that is much more important that any other: every player is to blame for all he or she does with the cards in their hand. It is never about luck, its about them and how they play.
You must not let others influent your gaming style. If you do that you will be at their hand. They can manipulate your game and use your style to win their hands and take your chips or money. Psychology is an important factor and players will attempt to use it against you, this is not because they are rude, but only because this is poker and these things go along with it, they absolutely have to.
Lets consider a possible situation. You are at home, right in the middle of your poker session, having a great hand and a friend comes along to visit. You will make to mistakes. The one has already been made the moment you declared yourself available when in fact you were playing poker online and for this you shouldve saved your full attention and concentration.
So, you are now just one mistake away from losing money, still you are sitting there, with one eye at the poker table and the other at your friend. Regardless what he came to tell you, he is a distraction right...