Have you been in a critical situation ?
Wouldn't What would you have thought if you or somebody had been in an intensive care room ? I tell you I had been interned there because of I used to have health problems.. I felt that vividly, and, since then,, my life was being has changed a lot of. But c Currently I get used to live healthier thanks to I have having changed. my habits of health .
----------
In terms of grammar, it is okay to say "live healthier". However, a native English speaker would instead say "live a healthier life".
In terms of grammar, it is also okay to say "habits of health". However, a native English speaker would instead stay "lifestyle".
If we include these two changes, the following composition would be closer to native English:
What would you have thought if you or somebody had been in an intensive care room? I had been interned there because I used to have health problems. I felt that vividly and, since then, my life has changed a lot. Currently I live a healthier life thanks to having changed my lifestyle.