Don't worry ...

... be happy: ... be happy: Thoughts on happiness research and the nature of unhappiness. (Hat tip, Dave Lull.)

"Me, I want to believe whatever is true even if that makes me unhappy. And with that attitude, I doubt attending church would make me happier."

Actually, it doesn't follow that, because going to church makes A happy, going to church will make B - or anyone else - happy. Another falsely converted proposition. In fact, people attend church because they think something connected with going to church is true. They don't think something connected with church is true because they attend church.

Also, having a want satisfied tends to give some degree of pleasure, which is attendant to happiness. So, one should be happy to the extent that the desire for truth is satisfied, if truth is what one wants, and even if the truth in question is not of itself conducive to happiness.