Years ago when I first started riding, my parents couldnt really afford any more than one lesson a week at the local riding stable. I didnt own a horse at the time and knew very little but had always dreamed to own my own horse.
When I finally was given my first horse I took matters in my own hands and started helping with teaching and mucking out stalls at a stable. I did that for years before. It was a lot of hard work. Now it is no longer a problem (obviously) and work with a high end trainer, and train and ride my own horses, always have babies and resale projects on the go which feeds my buying of my own string of show horses.
I have no doubt in my mind you can achieve your goals. Like they say
"If you can dream it, you can do it"