According to you, you are not satisfied in your business. You are thinking about starting a new business but you are thinking about its risks too. Friend in my college days I was also like you I also have lot of ideas to start a business. As I think it is not easy to earn money from every business so you stay on your cleaning business. However, for part time or your interest you can start another business in which you have much interest but make sure you have good knowledge in that field.
for me, to start a new business to be completely in Balance with the intention and spirit to succeed.