It is hard to answer your question without seeing your chart.
Jupiter orbits the sun every 12 years. Depending upon your age, you will have had at least one Jupiter return-- maybe several.
An ephemeris is like a time-table for planets. For each calendar day, it shows the planets' sign and degree. There is a good free one at Astrodienst
www.astro.com .
Recall what was going on in your life during your last Jupiter return to get some idea about your next one.
I'm a senior, so I've had a bunch of Jupiter returns. They never amounted to a whole lot. Jupiter rules your life philosophy, so maybe I was a bit more philosophical during the returns.
You can think of your lunar return as the end of one cycle and the beginning of another. The moon takes roughly 29 days to orbit the earth, so it's a shorter time frame.