Answer:
I have actually turned two people away from suicide simply by losing my sense of self. I basically acted like a total retard and forgot about being embarrassed. Once I did this, I hung out with him\her (one was a girl, one was a guy) at a crowded place, and went about freaking random strangers out doing random crap in front of them, asking them awkward questions (loud enough for others to hear), and that pretty much worked. (Also, while at the crowded place, I threw some food at someone. That actually does not work out too well in terms of crowd reaction...my friend thought it was pretty funny though. Even so, if you want to stay in the mall, don't do that particular cheer up thing). Hope this helps.