Trying to decide what business to get into...

There are So many choices out there. But I have made up my mind that I am going to take on probably 2 businesses plus what I am doing right now. I need the extra income, I need to be able to know for sure that I can keep making a stable income in case something were to happen to my job for whatever reason, I want a back up plan...or two!!   I was even thinking about pursuing my real estate experience and taking that to the next level. I am determined that this is going to be a life changing year for me, in more ways then one.   So I am looking into a few different things. I don't want to pay a ton out of pocket. I don't mind paying a little but not a lot. I am not to keen on the idea of paying a monthly thing BUT if its on products that were using anyway then that's ok.   Do you have any suggestions out there? Are you currently running a business from your home and actually doing good and making a good or descent income? Please share if you are. I am going to be choosing them by next Friday the 4th of Feb. When I get my refund back.