Show 'nonimmigrant' intent
This means that you cannot show that you intend to immigrate to the U.S., to work in the U.S. or to do anything other than visit. Your intention must be to visit.
Show the assets you have in your home country
To help with the intent issue, you can show evidence of all the assets that you have in your home country, including cars, real property and any interest you have in other property.
Provide Familial Ties and Educational Ties
Attache evidence of family you have in your home country that will still remain there while you are in the U.S. Additionally, letters from your employer showing you have a job awaiting will help.
Show you will not become a public charge
You need to show that you will not have to work to make ends meet. Show bank account statements and income such that you can visit the U.S. without having to rely on public assistance or to get money by working in the U.S.