Could anyone whose first language is English correct or revise the following ?and please give reasons for modifications. Thanks!
1.One's success is 50% by efforts and the other 50% is by luck.
2. I guess you should be more humble,especially when you meet a successful person who can give you a lot of help for the success.
3.The hostess is "A's" at hosting the program. She is showing high consideration for contestants.