Leaving the tech sector isn't necessarily the solution to your problem. Restructuring your career in a way that is sustainable and viable for you physically and mentally is the challenge that everyone goes through in life. When you are younger, time is on your side while resources are not; the opposite is true when you get older, assuming you have at least tried to consolidate and accrue some resources (people, money and skill/knowledge).

I think most people don't leave IT because they are actually not passionate about something enough to motivate them to take that leap, or they have not tried hard enough and so it leaves them no real choice other than to continue doing what they know best.

It actually doesn't matter what you do as long as you put in an honest effort. Because if you keep at it long enough, it can become something that helps you deal with the stress of the job (rather than giving the money to a psychiatrist), and if you become good enough at it then you will have a natural alternative to turn to if you really can't stand the main job anymore.

I have gone from IT to something that I am passionate about, which is related to mental health, sustainability and actually helping people for a change. It is not easy and I am not there yet, but because I have started early enough, it doesn't feel too painful (it's not the first time I have changed career either) and I am motivated enough to overcome the things that people see as 'problems'.

What are you open to doing that will improve your chances? Would you undertake training or spend time trying out different careers by leveraging your existing skills and knowledge? Maybe education so that you can contribute towards a better future, or building some product or service from what you have mastered in IT?