A bit of good advice from C. H. Spurgeon...

...who was a theologian in Britain about 150 years ago. This quote boosted from here.

“A man who is to do much with men must love them and feel at home with them. An individual who has no geniality about him had better be an undertaker and bury the dead, for he will never succeed in influencing the living. . . . A man must have a great heart, if he would have a great congregation. His heart should be as capacious as those noble harbors along our coast, which contain sea-room for a fleet. When a man has a large, loving heart, men go to him as ships to a haven and feel at peace when they have anchored under the lee of his friendship. Such a man is hearty in private as well as in public; his blood is not cold and fishy but he is warm as your own fireside. No pride and selfishness chill you when you approach him; he has his doors all open to receive you, and you are home with him at once. Such men I would persuade you to be, every one of you.”

C. H. Spurgeon, Lectures to my Students

You needn't be a pastor to put this advice to good use. Almost any daily contact with the public at large will go the better for it.