Psalm 23:4 - Even though I walk through the valley of the shadow of death, I will fear no evil, for you are with me; your rod and your staff, they comfort me.
Basically God is there with you in the darkest of times to protect you, and comfort you.
Matthew 6:25 - Therefore I tell you, do not worry about your life, what you will eat or drink; or about your body, what you will wear. Is not life more important than food, and the body more important than clothes?
You are worth so much... Don't let things which are NOT YOU define YOU. (Friends/family/social status)
I would read the book of Job. Man... God put him through the worst trials throughout the entire bible. Life's tough... And in life, you have these things I like to call "suck zones". We, as humans, have these periodically throughout our lives. And that's what they do. They suck. It's so strange to look back on those times when you have those scary thoughts about suicide and where people separate is that some people choose to follow through with them, and some people wise up, and those who follow through leave scars on everyone they leave behind. People thinking "I could have done something for this person, and I didn't." It's really really hard having a friend or even knowing someone who has committed suicide just because you'll never know why... and you hate yourself for it... :/
I hope I helped in some way... If you ever need to speak to someone on an individual basis, I respond to every PM, and I'll talk to you at any hour on MSN. Please, if there is anything I can do, I implore you to tell me.
Also, I am sorry if you're not a believer, and if you are not I hope you're not offended by this post. I have reasons other than verses from the Word, if you'd like me to discuss that with you.