The phrase "endless sunshine" means having continuous and unfading happiness or positivity in life, metaphorically symbolizing a life without any troubles or darkness. Full definition
The long days of endless sunshine are getting broken up this week with bouts of clouds and showers. (faring-well.com)
Who doesn't love endless sunshine and clear blue skies huh? (poshscene.com)
However, there are only a few destinations that deliver the perfect holiday blend of endless sunshine, magnificent beaches and a warm and welcoming culture. (whitesandshotelandspa.com)