“If you write one story, it may be bad; if you write a hundred, you have the odds in your favor.” – Edgar Rice Burroughs, Born Sep. 1, 1875.
Until you are a copywriter…
Stop buying copy books.
Stop collecting swipes.
Stop hand-copying old ads.
Stop it. Instead…
Start writing some copy.
Start publishing it.
Start selling stuff to people.
When you're doing that, THEN you're a copywriter.
THEN you can start learning about the finer points in books and refine your skills, and use templates and formulas, and find a mentor. Only then.
And it's not going to work your first time, unless you're lucky. By the tenth time it works, you might be okay. By the hundredth time, you'll be better than most who self-apply the label of “copywriter.”
But calling yourself a copywriter doesn't make you one. Having a guru mentor doesn't. Reading the right books doesn't. Copying the right ads doesn't. Knowing the right names and who wrote what offer doesn't.
Writing copy does. If it converts, it's copy.
So go do that.
No need to discuss this one.