Good advice on noticing things in life that are funny or absurd or illogical, and writing them down. Lots of comedians have learned this.

Mitch Hedberg had a bit, I have a notebook where I write jokes. When I'm in my hotel room sometimes I think of something and just write it down in there! And if I don't have a pencil with me, then what I have to do is, convince myself that what I thought of, aint funny.