Invest in yourself and when you become good, the investments will be worth it because the knowledge about trading stays with you forever as you become an experience and victorious trader. Success comes with time and the success that comes quick aren't always worth it but those ones that comes with time are the ones that stays with you forever as it improve your financial status when used right.
If you have seen the potential in yourself, you don't need to be good before you invest in. And that's why if you have some faith in yourself, then invest already.
If you fail with that, it's a lesson but if you succeed, it's gonna be worth it.
Test and failures are associated with the investment that you're about to do and the best thing here, is that investment is for yourself and you're right that it's going to stay to you forever.