Enthusiasm is or attracts positive energy from others and…
Enthusiasm is or attracts positive energy from others and will attract even more people to provide you with additional energy.
— from Fuel (Energy)
In the book
Think of your life as a bus, and understand first that you are the driver — or so I came, slowly, to believe; you can point it where you decide to go. The rule that follows is to fuel your ride with positive energy, because enthusiasm is contagious — it tends to draw good people toward you and to energize the ones already in your formation. And the discipline that follows that is to guard the tank fiercely: allow no energy vampires aboard, the people who drain you and leave you wondering when they will finally leave; surround yourself instead with the people who fill you, not those who empty you. — Fuel (Energy)