Wazifa for confidence

Q: I'm doing MBBS but I don't have any self confidence. I easily get worried and frightened. I can't even talk to anyone. I don't have any confidence and can't do any thing. Please tell me any dua or wazifa so I gain my confidence level and perform better because it's getting worse day by day.

Tahajjud Salaah

Q: I want to know is it compulsory to sleep before performing tahujjud Salaah? If a person is awake till 3 am, can he/she then perform the Salaah? I have heard from many people that it's necessary to sleep before.

Dipping chicken in hot water to remove the feathers

Q: In many places, the chicken is slaughtered and then tipped in to the hot water and then the feathers are removed. In all the chicken shops this is the method. Is it permissible to eat this before taking impure parts? Secondly, feather removed by hand instead of using hot water and then roasted to removed small leftover feathers before taking out impure parts, is it permissible?

Becoming angry

Q: Nowadays I am confronting a huge problem. The problem is that I become angry at very small mistakes of others. I can't tolerate anybody elses joke. Sometimes this anger fades away quickly, but sometimes it becomes prolonged. I don't know what to do about it. I am an engineering student, 21 years old. Please grant me a solution to this problem.