There’s no small amount of ideas and opinions in the world. Everywhere you turn you’re able to pick out some concept that someone has had. You have the ability to take that concept, use it. Or you can discard it.
In the moment, you’re only certain of the possibility. That it may or may not be useful. Hindsight is 20/20, and that’s the only way to verify whether something was as beneficial as you hoped it’d be.
However, it’s important to not let past failures dictate your decision-making too much. Being afraid to jump at a new opportunity is just as bad, or worse, than failed attempts.