Source: This quote is from Peak Performers (1987) by Charles A. Garfield. This quote is often misattrbuted to Mahatma Gandhi as this phrase is adjacent to a Gandhi quote in at least one list of quotations alphabetized by last name.

Meaning: This quote means that you’re going to do what is most important to you. People take action on things that are most important to them. For example like you had to wash the car, but you were really hungry. What action would you do first? You would cook and eat then wash the car. In another way our actions shows what task is most important for us or what are our priorities. This quote also helps us in self analyzing like if we think certain task is a priority in our life, but we are not taking any action to complete it than we are supposed to re-examine our priorities and act according to that.