Sell all of your equipment and get a real job. If you have interest in this field then get a fulltime job working for another lawn company and learn from them.
Also, All_Toro_4ME provided some very good advice. However he does not mean keep being a scumbag and keep lowballing. "Keep growing and never stop reading and learning about the business". Relating that quote to your own situation would mean "Start reading and learning about the business."