Natural ability can almost compensate for the want of every kind of cultivation; but no cultivation of the mind can make up for the want of natural ability.

Training amplifies what is already present more than it manufactures something new. An untrained person with real aptitude for a thing often outperforms a well-schooled person without it, which is uncomfortable and mostly observable. The practical use of this is not resignation but direction: it is a case for finding where your aptitude actually lies rather than grinding away where it does not. Effort works best when it has something to work on.

Notice which tasks you learn quickly and which stay effortful after years. Put more of your time into the first category, and find help for the second.