Find light in the beautiful sea
The sea refers to life. It is as tumultuous and sublime as the sea. To find light means to recognize the things in your life that make it beautiful and worthwhile. She reaffirms this by continuing with “I choose to be happy”.
Alternatively, she could be referring to an individual who is flawed yet beautiful. She scopes out elements that portray the individual as more alluring.
“The beautiful sea” could also refer to one’s emotions — saying that one must find the light inside yourself — again reaffirmed in the following line “I choose to be happy” :)
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