TOPIC: The following sentence needs to be modified???

I'm wondering whether the following sentence needs to be modified?

"I think you are success in your personal career. of course, it depends on your knowledge and abilities. But I have to link it to English skills."

Thanks a lot.

Corrections shown in CAPS):

" I think you are successFUL in your personal career. OF course, it depends on your knowledge and abilities. But I have to link it to your English skills.",
Please note that, while the last sentence has no errors the following wording follows better from the previous sentence:
"But it is also related to your English skills." or
"But is also depends on your English skills."