OP, in your honest opinion…do you think you are better? Let me explain.
In my freshman year, one of my close friends was severely depressed (self-harm, suicide notes, ect), so the point where she hit the low point and was standing on the roof of her two story house ready to jump onto the concrete below. She told me that she stayed there for a while…unable to think, to act, just staying there. And then she started crying, and then she called her brother, who had gone off to college.
I don’t know what they talked about, but I do know that since that day, she has not seen a therapist, she hasn’t self-harmed, and she hasn’t written another note. I don’t think her parents ever found out either.
She is happier now, and far more open about her tendencies to spiral downward. Her group of friend, including me, also are always there for her if she feels the need to talk, or if she ever slips into a bad place (which does happen on occasion). But overall, she is better.
OP, I’m not saying that therapy is bad, or that you shouldn’t see a therapist if you genuinely think you need one. What I am saying is that you don’t “need” to see a therapist to get better. The question is, do you still think you are in the extreme you were sophomore year? Or do you think that you’ve grown in such a way that you don’t believe you are at risk to fall into the same dark place.
You state that you think you’ve improved, which leads me to think that you might not need counseling. In that case, simply write it off as maybe stupid teenage hormones messing with your head. Don’t let that moment define you. I can name at least five people who have attempted, or almost but were stopped, and never saw a therapist. They are all fine people today. All of these incidents occurred Freshman-sophomore year. I suspect you are like them.
You’re a teenager. There are hormones messing with you. Stuff happens. Try to see if it is on your record. If it isn’t then there is no need to address it. If it is, you go from there.
Good luck.