Subconscious suicide when human or animal does things it knows is wrong or hurts itself

 Wreckless dangerous behavior

Driving fast, erratic

Overworking

Drugs drugging self alcohol uppers downers pain killers

Lifting too much weight

Pushing self beyond limits

Exposing body to any extreme: food overeating, undereating, starving, temperatures, cold, hot

Unsafe environments

 Shady criminal people associates

Rushing, speeding, not allowing enough time

Too much to do

Too much stuff, material things