I'm an INTJ 5-1-2. Things that stress me out usually relate to having too much going on around me/too many things to juggle, and the drive of perfectionism. It's usually related to work/study/professional/goal-related issues and what I think I need to be doing. It drove me to anxiety/depression and I withdrew as a response to stress. It took me literally years to climb out of that hole.
It didn't come naturally to me at first, but I've built habits to step outside of the 5 need to withdraw into my head. The first thing that I do is take care of my body. By eating well, working out and getting a good amount of sleep, I center the needs of my body. That's very important because the body and mind are linked. The body disintegrates before the mind, so choosing to withdraw to serve only the needs of the mind, and neglecting the body, feeds into the vicious cycle.
Secondly, I externalise. I make a simple plan, and I take action - doesn't matter if it doesn't seem to have an effect on the bigger picture. Just by taking action, I'm externalising what's in my head, and providing a stimulus to obtain more information. When stressed, I build worlds and huge theories in my head, but don't act on them. Everything feels futile because I'm not taking action and convince myself that my worries will happen, so it's paralysis by analysis. Just by taking action, getting feedback/information, and by talking to people, it expands the range of possibilities that are open.
The third thing I do is require projects to be finished/done, not perfect. There is nothing on earth that is perfect, and if we sacrifice action for perfection, we cannot move forwards. Under these circumstances, things build up, nothing gets done, and I feel more and more stressed because it's never good enough. You set yourself up for failure. I have major projects ranked by priority, broken down into smaller aspects that can be worked on at the same time. I don't allow myself to be sucked into the idea that there's one way of doing things, and am constantly on the lookout for more information so that I can adjust my direction. At the same time, even if things that I've spent a long time on don't work out, I'm still OK with it, since I just consider it an unanticipated part of the price to pay. I clearly separate my sense of identity from what I do. I also take calculated risk and ensure that the price is never too much for me to pay if I fail. This balances my need for self-preservation and control (+tendency to be over-conservative) with the requirement of risk that comes with working on big problems that matter to me.
Not sure if any of this will be helpful for you.