To comment on what Nerys said, it seems that literally everyone had a very different teenage life than I did. My emotions were a lot more controlled as a teenager than they were in my twenties and thirties. A part of this came from my upbringing--I believed that studying hard in school, getting a good job, not doing drugs, smoking, or any bad things etc. would get me a good life with friends and opportunity to date and ultimately marry a fellow high achiever. I got myself through UC Berkeley, working with 2 Nobel laureates, a Master's degree, and a six figure salary career mostly on this mindset.
Once my twenties hit and I got that high paying job and all that, I realized my social life didn't get better, I wasn't meeting anyone for dates or even friendships (I heard "I don't know you" a lot) and everything I believed in my teeenage years went right out the airlock so to speak. Add to an injury that caused my ears to ring all the time and the sinking realization that my parents' strict "Asian Tiger Mom" upbringing was only aimed into turning me into a money making machine for their benefit (they couldn't be bothered to hear about my dating or social struggles once I actually became their money making machine), and my emotional control became harder to get a hold on, infinitely harder than it was in my teenage years when I believed the myths I was told would lead me to the life that I wanted.
I need Spock's emotional control example now more than I ever did in my teenage years. I wish that were an exaggeration.