I agree with these three skills, but they are still difficult to obtain for me. For success, I think hard work and opportunities are also very important.

Absolutely  pro  to  these  items above
I think  the ability to select right orientation  and  perseverance  are  necessary.
Having an eye for oppotunity also makes sense...
   ---- fresh guy

hard working ,insistence ,confidence ,communication  skills . etc

What i want to ask is that how i konw whether the sentenses i use is right or not ? maybe in the early time time i have made big mistake.-this is about English learning.