Let me tell you something...
I was told over and over again that there was no way. That because I was 18 that I would never be able to get on with an ambulance service, let alone anything dealing with 911.
But I kept looking and kept my options open. I found a fantastic hospital based service, showed them that I was serious, and so did they. Two weeks later I was working the streets on a 911 rig as the Basic with a Paramedic.
I just turned nineteen, and still work this phenomenal job every week. Am I the luckiest 19 year old alive? No... Was it easy to make any of that happen? Heck no! But perseverance, enthusiasm, and a nice suit go a very long way. Keep your head up and remember that many people truly are trying to give you the best advice. However, YOU must be the one who experiences what happens in your life, not vicariously through whatever happened to so and so in another state.
Are the odds against you? More than you know. This sounds kind of silly, but it is your job to experience being turned down and rejected, not others to tell you. Then, when things finally do work out, it's that much sweeter. No person, from an audience perspective, can tell you how things are going to turn out. Its between you and the man with the magic phone number. (Here is where the nice suit bit comes into play) And to end all this, I will leave you with one of my favorite quotes.
"May your trails be crooked, winding, lonesome, dangerous, leading to the most amazing view. May your mountains rise into and above the clouds." Edward Abbey