"It is amateurs who have one big bright beautiful idea that they can never abandon. Professionals know that they have to produce theory after theory before they are likely to hit the jackpot." — Francis Crick
Quote
Theoretical molecular biologist Francis Crick on the need to make more attempts. Similar to quantity predicts quality.
Remember, "amateur" originates from the Latin word amātor, meaning "lover." To be better, you must be able to abandon your one beloved idea and kill your darlings.
Also, "If I had to live my life again, I'd make the same mistakes, only sooner."