Sentence:  Negative feelings can be worked through and their energy converted into <WSD>positive</WSD> energy... In crisis, normal patterns of self-organization fail, resulting in anxiety (negative energy). Being open systems, people can exchange this energy with the environment and create <WSD>positive</WSD> energy for taking action... 
Meaning of the word marked with <WSD> tags:  Good, desirable, healthful, pleasant, enjoyable; (often precedes 'energy', 'thought', 'feeling' or 'emotion').