I went thru a similar experience. I believe I was 5 or 6 and had a nightmare / bad dream. From what I recall. I am now 40. When I was your age it was a struggle as well. You are discovering the world, friends, jobs, your social life is at it peek perhaps. You will have ups and downs as I did. I doubted myself, my ability to earn more money than my colleagues etc. I blamed most of my short comings on my stutter. At some point I took ownership of my own life, my career, my life situation. I think for sure it is a mental block more than a handicap. Continue to push thru negative thoughts. I still stutter when I order lunch for my family, when I am on team meetings but I do not care so much anymore and tbh people I interact with dont care either. Just continue to study, work, learn harder than others. Make yourself and your skills undeniable!