“He who has a why to live for can bear almost any how.”
― Friedrich Nietzsche
In English, when we say we have done something ‘on purpose’ we mean we have done it volitionally. We chose it. So there is a relationship between choice and purpose.
That’s very important.
In the Nietzsche quote above, note the use of the word bear. There is a double meaning in that word. Not only does it mean to tolerate, it also means to carry. When we are aligned with our purpose we can carry out, to completion, our actions.