I'm surprised no one has mentioned this, but if you want to attain your goal, you're basically swearing off having a serious relationship.
It's very rare for you to meet someone serious about saving money. Before you know it, they're complaining that you never do anything even though you have plenty of money (relatively).
Are you sure you won't want a relationship? You're young enough that within a decade you'll be a completely different person. It doesn't seem that way now, but a decade is a massive force.
There are other things you'll be giving up: Pets, for example, are quite expensive. Sinking $3k into an electronics hobby is also rewarding. You'll also be buying everything second-hand if you're really serious about saving, and it's hard not to become frustrated with all of the poor-quality things in your life.
And then before you know it, your youth will be gone. Time is more valuable than money.
Just think carefully about your goals. It's easy to set a lofty aim, like becoming a doctor, and then set yourself on a trajectory you may regret.