Now, does that mean I actually have SAD? I couldn't really say as I'm not a mental health professional. But I do know that if it actively stopped me from doing things that I wanted to do, then I'd see about whether I could fix it. As it is I'm quite lucky, as I'm about as ungregarious as it's possible to get so don't want to be more social, and I'm able to get past it when I do need to, such as when I'm working.
Those sound like feelings that, as far I can tell, pretty much everybody has. At the end of my work day, which involves talking all day, the last thing I want to do is go out and be social or be among crowds. I think of my season of 12 hour days, 7 days a week as "going to jail" for three months and pretty much announce I'm going incommunicado until it's over.
Just for grins, I decided to see if I could overcome my irrational phobia about public speaking, public speaking as in addressing large groups so I became a paid amateur performer/dancer. It took me a few months of hard work and practice to get the techniques down as I can't dance to save my life and a little encouragement in "it doesn't matter how good you are at it, it just matters that you're doing it" vein, to boost my confidence.
I was by no means good when held up to professional standards but I became good enough to hear the words I wanted which were. you make it look easy.