Hi samdude. Welcome to Psych Central. Sorry you are feeling so low and contemplating self harm. Google the samaritans or other hot line numbers in your country so you have a safety plan.
Psych Central - Search results for Safety plan
If you feel that there is a risk of acting on these thoughts call a hotline right away.
If you have a therapist or psych doc, contact them as soon as you can to look at meds.
Many people who are actively involved in Psych Central find it helps take them out of their own problems to develop empathy for others. And their problems though still there are more manageable.
Some people find the forums give them the compassion and empathy they seek.
http://forums.psychcentral.com