Your not overeactting 
Take me for example: I asked my friend what she thought about a water color painting I was doing, and she told me the blending was bad, etc.
Now before she told me that, I obviously had seen my blending wasn’t the best while working on it, but I thought “hey it’s ok, this is just my first painting after all.”
Then after she gave told me the blending looked bad, I felt a little hurt, even though I knew it was true, but I didn’t want to continue working on the piece anymore(I still had to bc it was for school)
And a more recent one:
I’m working on a new story, and I asked for some feedback.
I was told that while my story has potential it isn’t something that she/he would reccomend, and that it wasn’t funny and the MC’s dad wasn’t a rescpectable character.
Like ok, I know my story isn’t the greatest thing ever, but I still like it.
After the feedback, I felt kinda empty(not really unmotivated 
) and I didn’t feel like working on my story anymore
I would just pull up the script, stare at it, code a few lines, and delete them.
Then I asked two other ppl to review my story, and overall, they liked it 
They pointed out a few details which I needed to change, which I’m currently working on, and after reading some nice feedback, it made me feel happy, and now it’s a lot easier for me to find the motivation fore me to code 
The moral of this rant is that yes, you’ll feel the negativity from other people, but you’ve got to ignore it and focus on the good
If you ever need reassurance, as a side note you can PM me, and I will write you a nice little message about how great your art is 
(I mean it should’t be too hard, I’m sure your great, and I suck at art 
)