Left: Stu Macdonald holding a peanut butter jar on a peanut estate in Argentina, Right: Stu Macdonald sat at a table, putting labels on peanut butter jars.
Macdonald came up with the idea for ManiLife while living in Argentina.
  • Stu Macdonald is the founder of a top UK peanut butter brand called ManiLife.
  • Before becoming a full-time entrepreneur, he had an accounting job at PwC.
  • Macdonald said it's useful to have a full-time job as long as possible when pursuing a business.

This as-told-to essay is based on a transcribed conversation with Stu Macdonald, founder of the peanut butter brand ManiLife, who lives in Wilmslow, England. Macdonald, 32, quit his accounting job at PwC in 2016 to work on ManiLife full-time. Business Insider verified his employment and resignation from the company. The following has been edited for length and clarity.