It really is simple to grow a spine as far as dealing with J is concerned.
Your mental health is another ball of wax to deal with or without J. I never tried to imply that you can fix yourself by "growing a spine". I said that it was how you need to handle J. That is something you can do without needing therapy. Believe me, this won't be the last obnoxious person you'll ever meet. Especially since i am in the Boston area. This will be good practice for when you take the T during rush hour.
Really. Seriously, don't let other people fuck up your shit.