If you knew you were going to live forever, would you change anything about your living habits now?

Depends...Is this live forever with your body and mind being basically invincible? Or like Doctor Who where the immortal Captain Harkness ends up a dying inflated head in a jar? Or worse...someone who starts to lose their mind after too many centuries of living and the brain can't take it?

If one...I'd probably become really reckless...
Two...I'd be really obsessed with taking care of my body.
Three...no idea.