Anxiety condition isn't developed or caused by a single factor but a combination of things.  The excessive anxiety can make you avoid work, school, family get-togethers, and other social situations that might trigger or worsen your symptoms. 

Several other factors play a role, including personality factors, difficult life experiences and physical health. 

What causes anxiety? Anxiety is the feeling we get when our body responds to a frightening or threatening experience. It has been called the fight or flight response. It is simply your body preparing for action, either to fight danger or run away from it as fast as possible. The purpose of the physical symptoms of anxiety therefore is to prepare your body to cope with threat.

Anxiety can affect us in at least four different ways. It affects:

• The way we feel.
• The way we think.
• The way our body works.
• The way we behave.

Am I suffering from anxiety? Here some examples:

• I worry about everything, I get tense and wound up, and end up snapping at the children.
• Even before I get there, I start to worry about all the things that might go wrong.
• When I arrive, my heart starts to pound, my legs turn to jelly and I just know I’m going to make a fool of myself. I have to get out.
• It feels as though there is something in my throat. My mouth is dry and I can’t swallow properly and then I begin to get panicky. I think I’m going to stop breathing.
• My mind starts to race, I feel like I’m going to lose control and go mad or something.
• I often wake up in the night with my mind racing, and then can’t get back to sleep for worrying.

Stressful lifestyle

Nowadays life is often stressful, and it is easy for pressures to build up. We can’t always control the stress that comes from outside, but we can find ways to reduce the pressure we put on ourselves: general tips

1. Try to identify situations you find stressful by noticing the beginnings of tension.
2. Take steps to tackle what it is about these situations that you find stressful.
3. Make sure you have time for things you enjoy.
4. If you feel stressed at work, consider talking to your manager.
5. Take up a relaxing hobby.
6. Make sure you get enough sleep if you can't, look for natural sleeping pills.
7. Eat a well-balanced diet. 
8. Take regular exercise.
9. Learn to relax.
10. Take some natural medicine for Anxiety to enhance relaxation
11. Asked your doctor about the side effects of anxiety medication before taking it.

There are several types of anxiety disorders, including generalized anxiety disorder, panic disorder, social anxiety disorder, and various phobia-related disorders. Therefore, it is very important that you act and find the right anti-anxiety medication for you, as well as follow the general advice given to you.

Sources: book Anxiety self help guide, Southern health and social care trust nimh.nih.gov