We know that rock stars have a bit of a devil may care attitude to their mortality, but rumors such as these really bring the gritty reality of the rock star lifestyle home to those still thinking it's all glamour and frivolity. Sadly, this rumor is indeed true and "Kickstart My Heart" was written after Nikki Sixx enjoyed too many hits of heroin.
After the fatal overdose incident, Nikki Sixx had to be revived in the hospital after being declared legally dead for two minutes until the medical staff were able to revive him. The event didn't put much of a kink in his party plans after Nikki ripped out the tubes attached to him and returned to the party.