Life is not always sunshine and rainbows.
sunshine and rainbows
idiomHappy, positive things, sometimes with a connotation of unrealistic expectations.
He thought the new job would be all sunshine and rainbows, but he soon realized it involved a lot of hard work.
While the brochure promised a perfect vacation, the reality of the trip was far from sunshine and rainbows, as the weather remained gloomy throughout our stay.