The little frigging muscle right under my left eyebrow keeps twitching and I wonder did I look at my code for too long today.

That usually means you're super tired. At least that's when it only happens to me!
Like when I've been burning the candle at both ends a bit too much.

I get this too. Its fucking annoying. Fucking left side.

I get this when I am really stressed out.

Still twitching after a good night sleep. 😑

You probably need:
1. Vitamin D, or get 20 minutes of sunshine everyday.
2.Vitamin B Complex.
3. To stop worrying about it. It will get worse if you think about all the time.
4.To sleep more, like others have. said. Sleep is the best healer.
5. Burn up all the adrenaline with exercise.
6. Eat tons of spinach. It is good for everything.
7. Drink less coffee and caffeine, if you do

It will go away. May take some time.
Peace be with you