I'm not always happy but I have joy. As an Evangelical believer I know the following:
(Galatians 5:22-23 NIV) But the fruit of the Spirit is love, joy, peace, patience, kindness, goodness, faithfulness, {23} gentleness and self-control. Against such things there is no law.
For me, joy bubbles up from below. It has nothing to do with my circumstances. Sometimes I'm happy and I have joy. Other times I'm unhappy and have joy.
I don't think Orthodox believers are Christians anymore than I think that Catholics are Christians. This is why:
https://www.jesus-is-savior.com/False%20Religions/greek_eastern_orthodox.htm
Wow, thank you so much for stopping by. I love what you said about being unhappy yet still having joy.