There are really no DONT's in your life - only your favorite DO's and you have to find a way to gain some net profit from them. If you are unable to figure such a way out it means you live to your expense and no matter how mach money you make it is probably not affordable on the long run: either you'll figure how to get the net in black ink or you'll be forced to chose anoter DO - that is for sure will be even better and soon will become your new favorite.