You have no idea who you are talking to, so stop acting like you know meand one look showed me that these reasons were listed:
Environmental and external factors
Environmental factors that are known to cause several types of anxiety include:
Your problems are stupid and petty...you are nothing... I am nothing......you deserve nothing, I deserve nothing. We are very expendable people. There is no way we should even feel deserving of worrying about things that humans made. If you can't grasp this, you're probably still in your 20's and need some time to develop. It's okay---we've all been there.
- Trauma from events such as abuse, victimization, or the death of a loved one
- Stress in a personal relationship, marriage, friendship, and divorce
- Stress at work
- Stress from school
- Stress about finances and money
- Stress from a natural disaster
- Lack of oxygen in high altitude areas
^^^ Those can all be seen as elementary stresses with the power of perception..
Your life is nowhere near as heard as 5 billion other people on this earth that don't call it anxiety....they call it adrenaline from just trying to make it to the next day...

I'm a hardcore nihilist/relativist and realize that nothing matters (check my post history) and I'm probably older than you. I'm 32.
You're just spewing trash and trying to make yourself feel better by putting others down.

Another one.
You have no idea what you are talking about.
.