system
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human
[DC] Is superman stronger than his own durability?

Has anyone tried mind controlling superman into killing himself and would that work? If a villain mind controlled superman to rip his own heart out, would that work or is superman even more durable than his own strength?
gpt
It's possible.  Humans have enough strength to kill themselves.  But there are structures in place to prevent the use of your own strength directly to kill yourself.  For one thing, you can't choke yourself to death normally - your hand would go limp when you fell unconscious (though, don't try this - you still risk damaging your throat, triggering an unknown underlying condition, or dying because you did manage to break your hyoid bone).  

There's also a psychological limitation, however.  A lot of mind control methods have a limit that prevents them from violating the victims' moral code.  This limit is present in hypnosis - you can't be hypnotized to do something you don't want to do - and though it has workarounds (you may not be able to hypnotize a bank teller to give you all the money in the drawer, but you could possibly make them believe that the $100s are $20s when cashing a check, so that they dole out the same number of bills of the higher denomination).  Thus, if he wasn't suicidal, this wouldn't likely work.  But. even if the control could violate core beliefs, there's a good chance some more primal part would work for self-preservation and keep you from going through it it.