You will believe what you want to believe where friends or team mates are concerned, which may not be entirely wise. Being gullible to the promises of those who are unrealistic or unreliable will only create confusion in the long run. Decide for yourself in a down to earth way just how much commitment you want to give in group efforts. There are times when get infuriated because they are proving unreliable or uncooperative. So go your own way.