If you are worried about what people will think of you and you have hesitation in interacting with them then it could be your personality disorder. However, hold on gentleman. This disorder is curable and that too without taking anyone's help.
Follow the following guidelines:
a) Don't think about outside world. Live life for yourself.
b) Whatever work you do, whether in personal life or in the college, devote your body and soul. Ask a question to yourself, whether you could have done it still better. If yes, then next time when you take up the activity, devote yourself with utmost energy.
c) While studying also, devote yourself to the studies. Aim for being best in the world and see the change in yourself. If you study with utmost concentration, you will retain the knowledge that you had grasped for long and you will have to study less.
c) Please remember success does not come with intelligence alone. To be successful demands concentration in work and dedication. If these two qualities are missing, then success could prove elusive even for the intelligent person.
d) Start mixing with people. Don't bother what others will talk about you. However, observe others how they behave and how they carry themselves. Emulate the good habits or practices.
e) During your summer of other vacations, participate in sports activities.
f) Read lectures on personality or positive thinking by Brian Tracy. Lot of videos are available on youtube.
g) Read the stories of successful persons. Read the autobiographies of the famous personalities.
Please remember that the world around you is what you make. The key to create a beautiful world around is in your hand. Start working right from today and see the change!
All the best!
10th November 2018 From India, Bangalore