Romans 1:12 that is, that I may be encouraged together with you while among you, each of us by the other's faith, both yours and mine.
There are times in our lives that we need to be around other Christians. We need to draw strength from them, especially when we are down and don't seem to have anything left in us. If you are down you do not need to be around negative people, so put yourself around positive people and draw strenght from them! It's great to have good friends!