The Gnat That Won’t Leave Me Alone

We all have a gnat, or multiple gnats in our life.
In real life, I have them in my apartment as it's the tail end of summer. I decide not to kill them because I don’t like to kill any sentient creature. I figure it has a short life span, why not let it live it out? That said, they are all over me, trying to get up nose, in my eye, just swarming around me. And when I get up from the couch, they follow me.
It dawns on me the gnat, like all things, is there for a reason—to reveal my impatience, my annoyance, my frustration—peskily circling my head, thoughts looping on repeat as if to say, I really need you to see me!
Then the gnat disappears for a while only to reappear again when I least suspect it. It’s as if it’s saying, I not only need you to see me, I need you to see that I'm still here. And do you see me for the tiny thing I am?
It serves many purposes.
So, what is your gnat that loops in your mind that's constantly bothering you? If not dealt with, it will swarm around you forever.
We need to be good masters of our minds and hearts. We have choices. We can either disrespect it and kill it, respect it but let it bother us, or finally capture it and set it free.
Soul-Prompt: What is my gnat, that pesky thing on repeat (in my heart or mind) that’s always there? And how can I process and release it, once and for all?