Depression or Fear?

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When I was in school, I was a good student and scoring always in top three position, when I went to college I was a stud, I had so many friends, a beautiful girlfriend , all teacher loves me a lot due to my nature, but after passing from college due to I am homesick person i did not able to go out side for work, now all my friends are settled out side of India also who are in India they are high paid employees, but I am earning very less. This forcing me to stay away from them, I am feeling now alone, do not understand how to handle the situation, although I do not have a big ambition or big dream, but feeling awkward to meet them . Is it my personality fault? How to manage these situations?