Most of the time, we see only the distorted image of a fact and believe it as true. Likewise, quite often we believe what we hear without bothering to testify it. And that half information or false information makes things difficult for us.
A task becomes impossible for us when we already heard & believed that it's impossible. When we proceed with concrete information & facts, everything is possible.
"If you want to make real progress, you must give up all ideas of personal attainment".