What does this phrase mean here?

[owenpan1979]

die a thousand deaths

If you want to be a leader, you must learn to fail - and not die a thousand deaths. Pick yourself up and start all over again.

[learning3nglish]

It means "feeling badly hurt, to suffer intensely"

[Kraken]

*EDIT* I've found this saying
Cowards die a thousand deaths. The valiant taste of death but once.

I was going to say something different, but now I'm a bit confused and I'd rather remain silent. :)

[Anglika]

It means that you are most unwise to continually revisit bad events in your mind, or to repeatedly imagine all the things that can happen or could go wrong before an event.

In fact, do not let your imagination overcome your reason.