“There’s no way.”
“That can’t happen.”
And that’s what they said about going to the moon too, 49 years ago.
Yet we did it.
When people tell you that you can’t do something or that something is impossible, it’s more of a reflection of themselves than it is you. It speaks of the limitation of their own abilities based on their past experiences, not yours.
It’s not that these people are intentionally trying to discourage you either; they’re only trying to see the world as they know it through their own experiences. A five year old might think $20 is a whole lifetime’s worth of savings, but to us, $20 can at best, buy just one or two meals. Neither perspective is wrong — they’re both just opinions from people with very different experiences.
So, when you think about it, the question isn’t really whether or not something is impossible, but whether or not you’re going to allow another person’s experiences stop you from trying.