When one get anxious especially without a reason this is most of the time a sign of a failure of digesting your Emotions especially your aka negative Emotions such as shame, guilt, anger, wishes .. 
Those Emotions have a reason in first place which is to be communicated or digested ( feeling them without any judgement or denying ) .. so basically your Relationship with your Emotions dictate your Psychological health. 

Now let's talk a bit about how shame influence your life and break you into pieces and make you fragmented and depressed .. 

Shame means ( I am wrong ) so there's a self hate going on without your realization, so your body doesn't speak English, the only way it will communicate with you is via Anxiety or a lack of motivation or apathy .. 
The mistake most guys I meet are making is they try to get rid of the anxiety by taking medications or escaping it by keeping themselves busy all the time .. all you're doing here is making your condition worst and it will come back 10 times harder and who knows you may experience a Psychological breakdown, so in my opinion if you're suffering from Anxiety or the conditions I mentioned above you should dive deep into your Emotions and feel them as painful as they are without any identification or dramatization .. the more you welcome those Emotions the more they'll lose their power .. many of you are asking so how do I dive deeply into those scary painful Emotions or Anxiety, there's a process it's called the revealing process .. it has to do with walking the Emotional scale from apathy which is the lowest Emotion until peace which is the highest Emotional level a person could function in .. I hope you guys got some value from this post ;)