How can I increase efficiency and maximize profit? 

By investing in a business that has the maximum potential. No matter how hard you work, if the business line you have selected doesn't have a lot of prospects, your effort will go down the drain. Consider the market situation and then set up your business. For example, there's a lot of scope in the Indian real estate market with projects like Piramal Vaikunth being launched. You can set up a real estate office and gradually venture into the property market.