During the first visit, consider St. Joseph's fidelity to grace. Reflect upon the action of the Holy Ghost in his soul. At the conclusion of this brief meditation, thank God for so honoring St. Joseph, and ask, through his intercession, for a similar grace.
Later in the day, consider St. Joseph's fidelity to the interior life. Study his spirit of recollection. Think, thank God, and ask.
Later still, consider St. Joseph's love for Our Lady. Think, thank God, and ask.
Finally, in a fourth visit, reflect upon St. Joseph's love for the Divine Child. Think, thank God, and ask.
Of course, I didn't post this in time for anyone else to see it and finish the novena on St. Joseph's Day next Monday, but if I had that much on the ball I wouldn't need novenas where all you have to do is remember you're saying one.
The website I copied the above from -- as well as the book where I first saw it -- says, "This novena has proven to be highly efficacious. It seems to be pleasing to St. Joseph and helpful to souls." I can't say for sure how pleasing to St. Joseph it is, but in its simplicity it does seem to be helpful to souls.