benm93 - It was lots of hard work and some good old fashioned luck. I was in nursing school when I heard from a friend about a manager on a cardiac stepdown unit seeking out nursing students for techs on the unit (luck). I emailed her right away and applied. I also asked for a letter of recommendation from my acute care clinical instructor who, as it turns out, was in the same graduate program with the manager and knew her (luck). I got an interview and was hired. It was at the interview that I found out that I could be pulled to any of the ICUs at any time when needed as part of my job description (luck). Basically I fell into my job and it was mostly luck. But once I was there, I didn't take anything for granted. I worked harder than anyone I knew. I picked up shifts, I spent my spare time learning. I consistently went above and beyond and grabbed the attention of the managers. Now I work one of the ICUs that I was pulled to as a tech. That part I like to think was pure skill.
Work your ass off and don't take no for an answer and luck will find you too!
On a side note, I sought out many opportunities to gain experience on the ICUs without luck and with a great deal of frustration before this opportunity presented itself. Don't give up if it's what you really want!