Have you ever been in a situation where you have seen two people, a newlywed couple, for example, who are just so clearly in love that you are shot through with a twinge of jealousy and wish that you could be them, wish that you could have that love. You can see that they are just so secure in each other’s love and mutual affirmation that they seem to be walking on air, they have no shortage of self-confidence and the world is their oyster.