Positive energy inputted is what gives you the ability…
Positive energy inputted is what gives you the ability to move forward. Critical rule is to have or intake is much positive energy as possible. Positive energy can come from friends and can come from people around you and can come from things that you enjoy. It is therefore in your best interests to surround yourself with as much positive producing energy sources as possible.
— from Fuel (Energy)
In the book
There is even a rough formula worth remembering: the Event plus your Perception equals the Outcome — the event is fixed, but the perception is yours, and it decides how much fuel the moment costs or yields. Positive energy taken in is precisely what gives you the power to move forward at all, which is why your own positive energy has to run greater than the negativity around you, or the negativity wins by default. The optimist's real trick is not to deny what is wrong but to refuse to stay stuck on it, keeping his eyes on what can still be done. — Fuel (Energy)