My younger brother is an ENTJ and works wonders with me in bringing everything in when I'm feeling overwhelmed. But, I on the other hand, calm him down when his plans fall to pieces or he's thrown a curve ball and didn't plan for it. I thrive off of thinking on my feet.
So, what kind of anxiety are we talking here? Big picture stuff? (my type of anxiety) or day-to-day, small picture things like my ENTJ brother?
It sounds like you're dealing with big picture anxiety, and with me, I tend to feel anxious over whether I am still on track to achieving my goals, and if what I'm doing is the best decision (big shifts and decisions). No one ever really knows that, but that still causes much anxiety for me. So if you're a big picture worrier, like me, try sticking your goals and plans on stickies or print out some sort of generalized to-do list and place those notes somewhere you will always see them in passing. This way you are reminded just what it is you ultimately want to do, and can make better-informed decisions that pertain to those big picture goals. When I structure my life to a fair enough degree, while still keeping my options flexible (I hate feeling locked into decisions) then I can better sleep at night. But for short bursts of anxiety and panic attacks (thankfully I don't get them too often) I take a step back from the situation or thing that caused it, and ask myself if it's honestly all that bad and throw so much logic into the situation that my feelings can't overwhelm me anymore.
It's hard to help you beyond what I personally do, since I don't know anything about your own situation, but hopefully my perspective can help get some ideas flowing for you
