Those of you who are profitable, what is the one thing that struggling traders need to know or hear?

I seriously started with trading a year ago. I am trying to learn all there is. I am trading on demo account and had some profitable months. But always when i think i made sone progress or think i am getting better it goes south. I know it takes time to figure this stuff out and i know there’s so much i dont know. I am not giving up and i am ready to give it all. But i often wonder if it is worth the time and effort but i love this and i want to make it.