Learning is cumulative.
Year 12 math would be impossible without the preceding 11 years of layering knowledge. Post official schooling however many no longer seek guidance.
Going it alone or convincing yourself you do not need help is a fools paradox.
When was the last time you sought counsel from a teacher or guide of any description?
Books, courses, mentors, coaches, experiences… are all shortcuts. Take the wisdom and layer upon their layers of knowledge. Stand on their shoulders.
Availability is in abundance, use them to your full advantage sooner rather than later.
Invest in yourself, it will pay dividends.