A man finds a shabbily dressed fisherman napping on his boat, and disappointedly asks him "Why are you not fishing?"
"I went fishing this morning, and have enough to last for three days," the fisherman replies.
The man then says, "Well, why don't you keep fishing? You can get more money."
"And then what?"
"And then you can buy a second boat, hire people, and then soon have a whole fleet on your command."
"And then what?"
The man laughs. "Well, you can then enjoy life, and go without a care in the world."
The fisherman smiles, and says, "What do you think I'm doing?