The phrase "in a positive light" means to present or describe something in an optimistic, favorable manner. It implies that the speaker is trying to highlight the good aspects of what they are talking about and downplay any negative qualities.
Sentences with «positive light»
They are expected to paint the company in positive light when customers call or approach their desks to make inquiries about the company. (jobdescriptionandresumeexamples.com)
What should you do and you can choose the best resume format to show your skills or some other block in more positive light? (resume2016.net)