I read that often, also in this thread. But it isn't working for me. Meaning is not a rational concept, I guess it is a feeling. I say guess, because I've never experienced it. I only know, that the lack of meaning is a feeling.

One day, I might stumble into a life where everything clicks together and the lack of meaning withers away. But that's not going to be a rational decision. "I conclude that this way of life is meaningful. 5 minutes later, I feel meaningful". Sounds ridiculous, doesn't it?