many different directions
many different approaches
Which one is the promising way to succeed?
This sentence adds no value to your introduction.
In my opinion, I believe that
Is it a good usage?
As far as I'm concerned, don't use "you" in your academic writing. You could use "people" instead.
you've
Also, avoid contraction in your essay.
As living in a competent world
Do you mean "a competitive world"?
creating the fashion
I think "setting the trends" sounds better.
such a tremendous success