That is absolutely and utterly a tough one to decide on completely. I met with bunch of guys who have been going through the same thing. They were good, but they just were not able to clock in the hours necessary to become even better. They always had a thing, a place to be, a sales call, meeting with a client, or the boss whatever. When they were not at work, they also had to be with the wifey, pick up kids or take them to sports training and whatnot. They developed a side hustle to cover their expanses, saved up a little to cover for the family and quit to become a full time trader. Some have it easy, some have it way harder than the others but you know, its not the end of the world if it does not work out for you. You can always go back to work or find another gig. I'd give you kudos for having the guts the pull the trigger on that decision.
Im sure you're stressed out but, you will never know if you don't try. At least you're trying. Best of luck.