"Upbeat personality" refers to someone who is generally positive, energetic, and optimistic in their demeanor and attitude. They often have a cheerful and lively disposition, spreading positivity to those around them. Full definition
The doctor chosen must possess excellent communication skills and have a naturally upbeat personality conducive to easily integrating into an existing team of equally devoted doctors and support staff. (bensalemveterinaryhospital.com)
I'm your typical upbeat personality, proud of the choices I've made and the life I lead. (cowboymate.com)
Donny's phone chemistry didn't match the profile and upbeat personality reflected in the emails. (cyberdatingexpert.com)