There are 28 million small businesses in the country, and they provide most of America's jobs and sales. According to the Small Business Administration, large companies have cut four million jobs since 1990, while small businesses have created eight million. Most small businesses want to become big businesses, so a new dog-walking service is probably not going to turn into the next Uber (though you never know! Dream big!).

Here are some of the top, best, most promising industries you might want to consider where businesses are growing. They are also ripe for disruption.