I can relate with what you are feeling. I have spent 4 years of my college life in engineering only thinking about suicide. Wasted hard earned family money on education I lost interest yet continued to get a degree. Besides, I haven't had any date till date and always found myself to be a complete failure. Stopped showing any interest in academics. Was not able to utter 5 words at a stretch in interviews and presentations. After my engineering I attempted you know what and stopped myself. I went to a psychiatrist, took medicines as well as therapy. Now 6 months forward I still stutter and am surely not fabulous in my academics. No girlfriend also. But something that past 6 months taught me was to manage the thought process after having a bad bout of stutter. I can only advice you to never think of anyone better than you due to how you say stuff and if anyone tells you so politely as them to go screw themselves..