Lyric discussion by 42 steps 

Cover art for Knee Deep lyrics by Zac Brown Band

"When you lose yourself You find a key to paradise"

LOL. It's a song about "flow", isn't it? :)

"In positive psychology, flow, also known as the zone, is the mental state of operation in which a person performing an activity is fully immersed in a feeling of energized focus, full involvement, and enjoyment in the process of the activity. In essence, flow is characterized by complete absorption in what one does. Named by Mihály Csíkszentmihályi, the concept has been widely referenced across a variety of fields (and has an especially big recognition in Occupational Therapy), though has existed for thousands of years under other guises, notably in some Eastern religions. Achieving flow is often colloquially referred to as being in the zone..."

My Interpretation

@42 steps dude, you’re way over thinking this. It’s simply a song about loving the sand and the sea and it being the best place to get away. One of the writers had just broken up with a woman so he went to his favorite place to kick back for awhile.