It's easy for me to be happy all the time. Even when I'm not happy, I'm good at faking happy. But how real is that? How are people going to see God's love in me if I'm happy (or faking to be) all the time? Let me explain. People appreciate real people. Real people have emotions. Happy, sad, angry, giddy.... the lot of it. It's easy to be happy all the time and be all "if you're happy and you know it clap your hands" - and claim that that's God. "God is love, God is happy, God is joyful, we need to be those emotions all the time to show God's love to the world." I think that's a lie a lot of people believe - or - it's a lie I believed for a long time.
Read the Bible. God has a lot of other emotions. He gets super angry. And frustrated. And disappointed. And loads of other things that aren't super happy. And that's okay... because He's real. I think we, as people, and as Christians, need to be more real. We need to be real in a world full of plastic and show our emotions... whatever they are. Yes, do it in a responsible manner. You can't go around beating people up if you're upset. But you can be upset, and figure out why, and fix it - without having to hide behind a wall of happy glass. Be real. The world needs more real people - and they will appreciate you as as Christian if you are. If you can show that, yes, being a Christian isn't sunshine and lollipops all the time. But my God is bigger than that and I can still love life and love God even if I'm frustrated about something.
I don't know if that made sense. But it's what is on my heart. Don't fake your emotions. It's not worth it for anyone.