What would make her happy is for that guy to be a good guy and like her in return. What is best for her is to move on and find someone worth her time. A friend, however, may tell her the later, and then give her hope that the guy can change and be a good guy. And so, the person seeking advice is going to only hear what she wants to hear. While your friends may want what is best for you, they can't know that any better than you can.

Friends can be biased. Another reason that a friend's advice may not be that great is that it is often biased. Advice should not be from a biased source. Usually, you want to hear a friend tell you that you are right, that the person that "wronged" you is a jerk, or something else. Usually the advice of a biased friend is more of an ego booster than a real source of advice.

Friends often tell you what you want to hear. They are your friend, they want to stay that way, they do not want to make you unhappy, or have you angry with them because you are not ready to hear what they have to say to you. They may not like hearing that they are being lazy, close-minded, selfish, or whatever it might be. There are always two sides to every story, and a friend is willing to believe that there is only one, which means their advice is not good because it is not coming from complete disclosure.

Be careful to make choices for yourself and determine if the advice is good or not. Think about how much of the story or situation your friend really knows, or whether or not you portrayed it accurately when seeking advice.

If you are going to listen to the advice from a friend, make sure it is coming from the right place, and that they are qualified to give advice in that area. Instead of seeking advice, you may just need a sounding board to bounce your ideas off, talk to, and work things out with. Remember that you can give yourself advice, as you probably know if your heart what you should do, or seek an authority on the subject when real advice is needed.