There are a couple of tools that can be used to narrow down your topic. 
Here are several suggetions listed below: 
 
  
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If everything makes you angry, you might want to consider looking inward. Perhaps therapy, meditation or anger management would be helpful.
   
Mind mapping is another alternative. This is a cretive approach to narrowing down your topic. Simply start with one word and circle it. From the main circle start writing down any word that comes to your mind and link it from the first. Continue doing this with each word and eventually you will be able to narrow down the subject. Here is an example of what a mind map looks like.
   
Talk to a chat room. Discuss your issues with someone else that feels the same way. If you have been even remotly familiar with web browsers, many have chat room selections. For example AOL has a direct link to chat rooms. 

What is a chat room?  Internet users can enter chat areas or "virtual spaces," where they can communicate in real time.  While most chat softwre only lets users talk by typing, more advanced products being released that will give you more flexibility. 
 

   
List
Here is a list of the top 10 things that make people mad.
Pick on and go for it! 
  1. Smokers that infringe on my space
  2. Child abusers that infringe on my space
  3. People that litter and infringe on my space
  4. People that have bad breath and infringe on my space
  5. Republicans that infringe on my space
  6. Democrats that infringe on my space
  7. Non-partisians that infringe on my space
  8. Animal abusers that infringe on my space
  9. Drug abusers that infringe on my space
  10. Any one that infringes on my space
 
 
 
 
Now go to Step....