Me too.. I got into private labelling in early 2015. Launched 3 products since then. The first was a total failure. The 2nd sells a few units a day, and does very well in Q4. The 3rd was a 'home run' and now I make a full time income off it.
I'm here trying to learn how to diversify my income streams as well as traffic sources, as I know that Amazon is a volitile place and the money I'm making today could be gone tomorrow.
Welcome and good luck!