Some see the obstacles that mark the journey as things to avoid or just momentarily overcome, but in this quote the ability to overcome the obstacle is the purpose of the journey itself rather than a random inconvenience of the path. Once you learn the “key” to overcome or defeat the obstacles you encounter, your mind and body have the necessary parts of the puzzle needed to retain the knowledge and commit it to further use as similar obstacles might be ahead of you and as part of your resident knowledge, you will have the necessary components to formulate the next set of successful solutions.