As far as success, I feel sure I can make it.In that sentence, the as far as is not a subordinating conjunction, but a preposition, the topic of the next section. Some guides allow this use in informal speech and informal writing, but I would urge you to join those who cherish the language and insist on using the expression as a subordinating conjunction:
As far as success is concerned, I feel sure I can make it.Of course, when tempted to use the as far as expression without the required verb, you might very well want to produce the meaning of a preposition, and plenty of good ones come to mind: on, concerning, regarding, and others.
Regarding success, I feel sure I can make it.
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