Spiritual Engineering: Science, Feelings, and Relationships

Is there a correlation bewteen feelings and spiritual progress? Do we have a "right" to get angry?

Urantia Book (1204.3)  ...But how unkind knowingly to defile or otherwise deliberately to pollute the physical body, which must serve as the earthly tabernacle of this marvelous gift from God. All physical poisons greatly retard the efforts of the Adjuster to exalt the material mind, while the mental poisons of fear, anger, envy, jealousy, suspicion, and intolerance likewise tremendously interfere with the spiritual progress of the evolving soul    

Spiritual Engineering offers an entirely new approach to happiness and relationships.  It applies the scientific procedure to separate symptoms from problems, identify the root problem, evaluate the most effective solution, and then test and verify the results.