I may be the perfect person to speak to about this. While watching Le Mans in 2014 I decided "screw it I'm going to race in Le Mans" and have been on that journey ever since.
The simple fact is that it takes a boat load of cash and a lot of hard work. If you accept that you have to sacrifice everything then you're at least off to a good start.
In order to get as far as I have (I now race for Kessel Ferrari in the Blancpain Endurance Series) I had to spend
all of my life's savings, sell my car and take on as much extra work as I could find.
I started by cold calling every single Le Mans team that entered the race in 2014. All of them said no because a) I had no circuit racing experience and b) to buy a seat at Le Mans in GTE-Am is $300k.
BUT racing is about relationships, starting from the bottom and then working your way up.
So I eventually did a one-off race with a small team in the Italian GT Championship, which I almost won. That led to an offer from a bigger team - that ran Lamborghini's - for the full 2015 season. I had to pay for it but I almost won the championship.
Then this year I got an invite from Kessel to test a Ferrari GT3. The significant part here is that it was not just money that got me this far but networking and relationships. I didn't have the money to even do the 2016 championship yet here I am doing what I love.
I do consider myself lucky but I also consider myself an example for others to follow should you be serious about this dream.
To give you an idea of what it will cost:
Racing Gear: $5,000 - 8,000 (helmet, suit etc.)
Travel: $8,000 - $12,000 depending on where you live
Cost Per Race: $18,000 - $35,000 depending on the GT Series
A full championship in a national GT series like the Italian Champs I competed in costs about $120,000 - $180,000.
A full go in the Blancpain GT Series (Sprint and Endurance) costs $400,000+
If you've never raced
anything before then you need to do at least one year of karting to sharpen the skills and learn what racing is about. Ideally you should race in karts for at least 2 years before making the jump to GT racing.
When I decided to go after my Le Mans dream I was 29... so if you're 19 you actually have plenty of time.
You're welcome to drop me a PM if you want more info.
Good luck