Those two concepts have some overlap. Why should we use our energy trying to accomplish something that many have failed? Do we have good reason to discard the validity of their efforts? Are there good reasons to think our particular abilities are better suited to the task? Are we going to make some incremental progress that others can build on?
He was saying that you should keep trying after most people would give up, not that you should expect everything to magically go your way.
Those two concepts have some overlap. Why should we use our energy trying to accomplish something that many have failed? Do we have good reason to discard the validity of their efforts? Are there good reasons to think our particular abilities are better suited to the task? Are we going to make some incremental progress that others can build on?