How to gain weight ?

I am a working women,n as I m in voice process,my shifts are rotating.How do I plan my diet to gain weight
My height -5'4
Weight- 43kg
Age-23
Its not heridatary as My all family members are Quite perfect.
please advice me.

Do you know if you have any health problem?
You have to slow down your metabolism in order to gain some weight. You have to eat like 2500 calories per day. You can slow your metabolism by adding once at 3 days 100 calories+ per day. Eat more meals/day (around 5 or 6, but in smaller rations). Eat between meals stuff like sweets, fruits, anything based on dough. Eat bread and pastas. Do not forget to exercise
Take in enough proteins to gain weight. When combined with a healthy dose of carbohydrates, the protein will get absorbed better and allow the calories to stick around longer.
Relax when eating to allow the food to digest thoroughly.

First I have a few questions for you to see if I can help your further:

Have you asked the doctor about any health problems that may be preventing you from gaining weight? There could be something wrong, because your weight seems to be very unhealthy.

Two, how many calories are you eating?
If you haven't started adding calories to your diet yet, I would start doing so. Adding about 500 calories a day is good, because that should result in one pound weight gain a week.

Whatever you do, don't go on a fast-food binge to gain weight. Sure you will probably gain weight, but it's an unhealthy strain on your heart and body. :-)
Amelie_m covered a lot, but feel free to fun mail me.

well if you can try and eat a lot of meat and maybe carbs like potatoes and pasta. also maybe sandwhiches etc x