Here is what helped me.
Sorry if none of these are helpful.
Check for a gluten sensitivity. There is a huge link between gluten and depression and suicidal thoughts. (There is a theory that some people suffer from leaky gut syndrome, the wheat goes through the gut and straight to the brain, acting as a drug, which can make you feel 'crazy' with thoughts.)
Keep a food diary and note what foods trigger the onset of 'fearful thoughts' - this could be anything from wheat, dairy, eggs or oranges.
Try doing Byron Katie's "The Work" - this is a free cognitive therapy consisting of four questions to help you unwind any fearful thoughts.
Here is a great video on dealing with any thoughts:
http://www.youtube.com/watch?v=sYy0CWpPE…
If you get panic attacks, sign up for the free emails on the panicaway website.
Keep two journals. One for writing down all your feelings, this is really good for clearing out your anxieties and getting all your war onto paper, you can delete it straight after if you need to, it's just good to really see your stressful thinking. And the other can be your gratitude journal - write down all the things you are grateful for that happened today.
Go to The Option Institute! Here is a link:
http://www.option.org/custom:single,595
If you cannot afford their programs, write to them and they might be able to help you out financially.
Talk and seek out any people you can confide in. Helplines are usually free and usually leave no mark on the phonebill.
I found Byron Katie and a gluten-free diet really helped quieten the 'mental noise'
Kind Regards.