Why do I study?

Why do I study? I don't know the reason these days. I had heard that if I study hard, I can become a successful person. Can I ever be so?

I seem that some people hate what I study related my major. They had pretended to like my aspect that I study them. And.. actually, I have known they don't like it. But I have studied them because I just liked it.

Recently, many people not only indirectly but also directly request me to stop studying them. Even some my supporters persuade me out of it. How ever do I have to?

They say that

"The prospect of IT is bad."
"It is not hopeful to graduate from local university"
"Stop studying your major. Your major is not hopeful."
"IT is the end."

It is not that I don't know the reality. But most of them don't give any excellent plan. And a few men tell me the plan. Even so I think it's not excelent plan. Thank you for advising me. But I don't have manifold ability even so I just do one of the most self-confident works. Accordingly, don't stress, please. I don't want to be stressed by that matter.