I live in a bright sunny area and typically go outside; will light therapy be effective for me?

Therapy for WHAT? There are various types of lights used for various purposes. Send in your question again to specify what benefit you hope to gain.
Yes. Being outside exposed to sunlight and fresh air is good for you and helps promote vitamin d production. Wear sunscreen though. Skin cancer is the most common cancer worldwide. Sunlight is good but protect yourself.