Achievement is not always success, while reputed failure often is. It is honest endeavor, persistent effort to do the best possible under any and all circumstances.
If your faith in reality is based on the belief that time moves in one direction only, the foundation of your faith will be shattered by the experience of the future.
I have learned, as a rule of thumb, never to ask whether you can do something. Say, instead, that you are doing it. Then fasten your seat belt. The most remarkable things follow.