I worked for s /w concern for 3 years and left my job because of recession. For almost a year I was at home and now joined the job again .Now I feel totally in secured and am very slow in doing work and scared of my superiors and getting many escalations. How to gain confidence here again? I feel pathetic and scared daily.

If you were asked to resign your first job for recession and had a break for a year than your feeling of insecurity at work and fear of superiors is very natural. Be patient and give your best to your work, slowly try to improve your efficiency which will build your confidence on its own. You will have to give sometime time to yourself to cope with the situation.