How to be a successful businessman ?

Everyone knows its hard to be a success, But u can be one of them. Also its not really hard, u just need to do a hard work and doing some setup. Firstly, Being a successful manager is to believe in yourself by searching and finding customers on your own. Marketing your products and services, financing your project are also concern. Secondly, you need to hire the best and right people that u believe that they will help your business and make it success, because some managers do a big mistake in their business by hiring their friends and the people they like, but soon they realise that they did a big mistake that made his business ruin and fall aparts. Moreover, you have to save some money for the business and keep it for emergency. Forexample, use the 70% money of your profit you gain through the pass year, and leave 30% for emergency. And you have to use 70% of the 70% u haven't save for the advertisement, Billgates said " if i got 1,000,000 dollar in my business, i will use 700,000 dollar on advertisement and 300,000 on products ", every business in the world did success through the advertising. Advertising can increase the business profit high and fast.