This link helped me. I looked it up for a friend who I was trying to help, but it ended up helping me with my own feelings of foolishness residual to my bouts with suicidal thoughts. But I haven't posted enough to add a link.
So. Google suicide hotlines and under suicide hotlines dot com click the sub heading for Texas. At the top of the page there's a link that says "Why Live?"
I found it to be quite informative. I do not vouch for accuracy, but it made us feel better, and that was the goal!