When was that time you ran away and regretted it?

When was that time you ran away and regretted it? I've stuttered since i was 6 and have had some pretty bad experiences (mostly in middle and high school) that didn't do well for my self-esteem and confidence. I'm a rather mild stutterer, nothing too extreme, but it's enough to condition my life pretty often. Sometimes the stutter overtakes us, we give up on doing something, we run away, and then regret it. Yesterday i had a presentation to do; groups of students had to write a report for a project, and the groups who did best had to present their projects in front of 80-100 people or so (Everyone did a part and had to expose that part). We did a good job and we were selected to present our report, but the professor e-mailed us the results late, and i had to less than a day to prepare my part. I had almost no time to prepare it, and overall i was scared of the situation and i just didn't go by pretending to be sick. No need to say, it resulted in another punch in the stomach for my self-esteem. If i had more time to prepare my part, i probably would have tried it out, but i just couldn't like this; i just felt it would have gone bad ,which is much worse for me since no one actually knows i stutter (because i became good at managing and hiding blocks during the years). While the other guys in my group didn't have problems whatsoever, here i am wondering if i could have done it too...i mean yeah i could have done it, but definitely not without evident stuttering/hesitation.