A goal without a plan is just a wish.

According to Wikiquote:  “The earliest appearance yet located of this statement is in 50 Ways to Lose Ten Pounds (1995) by Joan Horbiak, p. 95, where it is quoted as an anonymous proverb. It seems to have circulated as such for a few years before it began to be attributed to [Antoine de] Saint Exupéry around 2007.”  Similar note in Quote Catalog.