This feels so incredibly weird typing a response up to this because I recently just brought home my first horse after five years of riding and working with them. I managed my trainers barn for her while she was away on rides and vacations. I was looking after 1o horses at a time as a 13 year old. Some of them were older horses who needed medication at certain times and certain foods. Others were too skinny but were super picky so they needed their mash done a certain way, per her boarders instructions. I took care of her nieces 27 year old half arab, with a special diet (laminitis) and bad teeth. I was feeding, making sure he got all his meds, took him to the farrier and also took care of any other issues he might have had. This was all on our property, in front of my parents so they could see everything I was doing. Thennnn I went out and got a job, upped my grades and started saving up. When my trainer started recommending me to other to cover for her was when they started to catch on I was serious.
They were worried about the money and responsibility, so I had to prove to them I could do that all. I also had to prove I could be level headed and take no for answer, but still continue to work for my goal. I pay for billie and all of her bills, not my parents. I had to save up and prove to them I was serious about this. Point is, work really hard and learn to take the answer no calmly. Doesn't mean take it no permanently, just for that time.
That was really long lol. Good luck and don't give up! I never thought in my wildest dreams I would get my own horse. I am currently typing this as I get read to go feed the very real (and hungry) horse I get to call mine.
I may seem small, but if you mess with my horse, I will break out a level of crazy that will make your nightmares seem like a happy place.