Courage is contagious. When a brave man takes a stand the spines of others are often stiffened.
Enthusiasm is the best protection in any situation. Wholeheartedness is contagious. Give yourself if you wish to get others.
A healthy attitude is contagious but don't wait to catch it from others. Be a carrier.
You know out-of-touch liberals like Barack Obama say they want a strong economy but in everything they do they show they don't like business very much. But the economy of course is simply the product of all the businesses of the nation added together. So it's a bit like saying you like an omelet but you don't like eggs.