Your symptoms of anxiety, insomnia
, loss of appetite, and fatigue could be due to a variety of physical or psychological problems. You would do best to consult with your GP for medication.
Meanwhile if these problems are recent (less than 2 weeks) you could try some health-promoting lifestyle measures
Assertiveness - claim space and environment for yourself
Time management - especially with a view to focus on doing things you find rewarding
Recreation and social activities - essential for maintaining concentration, and motivation. Should be programmed daily in small quantities
Nutrition - don’t skip meals. Eat plenty of fruit and coloured vegetables
Exercise - the amount can be varied. Incorporate some stretching exercises and some aerobics
like skipping or same place jogging.
Relaxation - use a muscle relaxation technique
or any form of meditation
that doesn't take more than a few minutes
- for adequate, predictable and refreshing sleep (http://bit.ly/sleep-hygiene)
Cognitive and emotional measures
Cognitive restructuring - see the stress as a means not an end. Keep in mind the ultimate goal you are working towards.
Stress inoculation - explore the worst case scenario - is it that bad?
If these measures do not help, then you should consult your GP for further advice and medication