Its good, you have completed your BE in 8 years. Self confidence is more important to keep up. Since you have finished the BE you are degree holder with a engineering degree.There is nothing wrong in registering in the employment exchange also, may be in the future you might have a chance to get a good job in the government sectors also.
Diploma is easier than a Professional Bachelor's degree. Work and concentration is necessary to achieve any degree. Do not let your focus on other distractions until you get achieved in the Diploma course. The Diploma are of Full time Diploma and part time diplomas( which run in the evening hours).
It will be a good advantage if you find a full time job or a part time job, then converting that part time job to full time job with your interest and for your career growth and take up a part time diploma courses in a reputed computer centers like NIIT, APTECH just near your house. There are also good career courses which starts at evening 7p.m.-9 p.m. or 9.30 pm every evening hours even on alternative days like monday, wednesday, friday. Even there are weekend classes for Diploma that runs on saturaday, sunday. You got to work on lab exercises and on the computer exercises to make your self suit for the weekend courses. Take up a relaxation like morning exercises, yoga, meditation for mind and body relaxation.
Try and learn every failure into a success. Keep working round the clock. This will remove away your worries. Even a small idea can bring a brighter change in the life.Work and get all the help from your classmates, friends, parents advice, think and decide. This will give energy and knowledge how not to fail the work or study.
Later after completing the Diploma course,implement that on your work and try to create a change in the career.Also grow your career by taking a Masters degree of same group you took in the BE. Else prepare for Master of Engineering. Later with your industry working experience and diploma with a r reputed institution ,with an ME you can opt for teaching career also. So do not worry. Try till you achieve your goal.