In the united states:
First if you are currently having a crisis and have thoughts of harming yourself or others please call your local emergency services.
suicidepreventionlifeline.org - 1-800-273-8255
They also have a chat option on their website.
www.crisistextline.org - Text CONNECT to 741741
Easier for those that don’t want to talk directly on the phone
feelingkindablue.org - Must be 18 or older to use.
Crisis line - 866-728-7983
Chat room available on website
Problem specific forums on website