The thought of death scares me.

That's normal. Most people in the world are scared of dying. The idea of never waking up is frightening. Along with the thought of a family member passing away.  (I like to say "they passed away." instead of just "they died." It sounds better that way.)

The thought of death scares me. But- 

I can't stop thinking about it.

Almost every once a week I would imagine a scenario of a family relative or myself dying: car accident, getting shot or stabbed, or falling off a building. For some reason, those scenarios are the only ones I imagine.

They are either an accident: unexpectedly and unintentionally. Or Unexpected and Intentional. 

It's always a scenario where I'm with family and everything is fine. Until, BAM, the unexpected and unintentional or intentional happened. 

Unexpected: couldn't be avoided. 
Unintentional: wasn't done on purpose.
Intentional: was done on purpose. 

Expected: could be avoided.

If I had just stop thinking about the bad things that could happen. I could have been avoided all of this from the beginning. 

I'm sorry mom and dad.

I guess I should have taken your warning seriously. 

 But it's just funny. I can't stop the laughter from coming out. Thinking of your death will be the cause of your death.

The thought of death scared me.

But I couldn't stop thinking about it.