There was a time when I would have found this quote very distressing. You can plan all you want, and life still happens. So after you do the great planning, you need to be prepared to adjust.
If your dream home was a log cabin and half way through there were no more logs available. A wise person would change the dream to a log and stone home and move forward. The only thing that can ruin great plans, is lack of great adjustments. Keep your dreams alive.