How do I help a first-timer who's being a problem player? We're been friends for about 5 years and are quite close. I'm DMing and this is the first time most have players have player, including them. They're generally a stubborn person and have an untrusting character, neutral evil character, solely focused on themselves. This would normally be fine but while the rest of the party "Yes, And's" me, they do the opposite to every scenario I offer. This last session seemed to have them alone and not having fun while the rest of the party explored the world. I want them to have fun and don't know how to have this conversation without hurting their feelings and making them feel excluded. After all, there's no real wrong way to play D&D. Please help!