What is a very important skill a person learn in order to be sucessful in the word?

I think the most important reason to success is to be responsible and polite.If you have the responsibility in the work,you will make you progress more effective and quickly,you can do more work.second polite is very important,when everybady is not know you,good first impression is very important,if your boss like you,you will get more opportunity to behave.Friendly treatment each person will be able to have the good repayment.