First off acknowledge that you have a job, money saved up, and a place to stay. At least you have that. There are people nowadays that don't even have these things.
Second, you need to convince yourself that your situation is terrible and you need to change fast. This will fuel you. If you tell yourself your situation is not so bad you will never have the motivation to change. This is crucial.
From my knowledge, you can do a few things:
Go to college and get a degree in a field that you like, yet also will have good job prospects. Read Aaron Clareys "worthless" or just watch his Youtube videos for insight on what degree to invest in.
Start a business in something you are passionate about. Governments give loans to start-ups to get them going, also Internet businesses like blogs require a small amount of money to make.
Learn a trade like plumbing or being an electrician. These trades will always have work, and have potential for starting your own business further down the line.
If you don't know about investing and the stock market, it can't help but know a bit about it. You could make a bit of money on the side from this if you want.
Put some spare time in doing things that excite you or make you happy. This could be hobbies, learning something new, going out with friends, or just meeting new girls to date.
Next, just buy your car and get a place to stay if you want to. You have the money for the car, the next step is saving a bit for rent. If you want to save your money instead, then stay with your parents. Consider having a studio room with the toilet and kitchen utilities to yourself. It might be a bit more pricey than a shared flat, but there is a chance you will dislike your flatmates or prefer more privacy if you choose a shared flat. But it's up to you what you prefer.
