How I write happy things
When I write happy things, its normally due to some sort of moral realization or brilliant idea for others. Mostly thinking about others and how to help, puts me in a good mood to write.
For example, I was happy when I thought about a lesson I might teach to the kids at church. I wanted to show them that no matter what happens to them, God applies it for something good as it says in Romans 8:28. I was going to tell them about the blind man, who was blind from birth. The Pharisees asked Jesus why the man was born blind, whether it was sin from his parents or sin from the man. Jesus said it wasn't due to sin. Jesus says the reason the man was born blind was so that God's power could be seen through him. Then Jesus healed him, proving that the man was born for Jesus to show His power and heal him.
I was going to tell the story of another man who was born blind in our time. He didn't grow up in a godly home, but one day, as a young married man, he asked Christ into his heart. It was at that point he knew he had to do something for God. He wasn't called to be a preacher, and he was limited on what he could do because he couldn't see. It was then he realized there were other people in the world that were blind. He wanted to make them Bibles they could read. So he started his ministry of making Braille Bibles. Someone would request, and he would happily give them a free Braille Bible. He could have been upset over his disability but instead he found something that he was able to do and do it for God.
It's these thoughts that prepare me to write happier things. My brain is a little unorthodox but it works.