It depends.
If you're an athlete, fair enough. You need your muscles to suffer for you to make it to the top.
But as a learner? Different story. Pain, in the form of feeling bad about our mistakes, just gets in the way.
Which would stress you more, changing jobs, or moving house?
Would most people be more stressed by a son or daughter leaving home, or retirement?
Are you thinking 'It depends'?
It does.