The 3 Percent Solution for Personal Development Investing for retirement is a smart. Investing in yourself for a richer career from now until retirement is brilliant.

By Eddy Ricci Edited by Dan Bova

Opinions expressed by Entrepreneur contributors are their own.

Unless you are near retirement or a trust fund baby, the income potential of your career is your greatest asset. The house, cars and investment accounts are golden eggs that wouldn't exist without the golden goose, your career. Unlike investing in other assets, there isn't a well known "investing in yourself" rule of thumb to help you make professional development decisions.

How much money should I reinvest in myself? Like any other investment, investing in YOU should take into consideration your time horizon, risk tolerance around the personal achievements important to you, how long you've been in your career, longer term goals and current liabilities.

Related: The Best Professional Development Advice Ever

Neither investments nor professional development are cookie cutter but 3 percent of your gross salary is a good rule-of-thumb for reinvesting in yourself. If you are running your own business or have ambitious goals for your future it would be much more. Three percent should be the baseline for your professional development whether through books, courses, personalized coaching, new experiences or relationship building.

To put it into perspective, if you make $50,000 per year, then at least $1,500 per year should be put towards professional development. If you can commit to $125 per month for cable, you should have no issue in committing $125 into yourself.

Where does the three percent rule of thumb come from? Most employers that offer a retirement plan to their employees will match up to 3 percent of the person's compensation. If the company is giving you 3 percent in "free" retirement money, I believe you can then invest the same match in yourself to boost your income potential.

Inflation over the past 100 years has been a little bit higher than 3 percent. Many companies offer a 3 percent annual raise to their employees for doing nothing more than the same job. Reinvest your cost of living adjustment to help adjust your career trajectory.

If you are investing money with a financial adviser, they normally will be compensated up to 2 percent of the money they are watching for you. If you are paying 1.5 percent for your money to make money, you should be paying 3 percent for your career to make more money for you. Income is the fuel for all other investments.

Related: The Smartest Long-Term Investment is You

The next question is finding the 3 percent on a fixed budget.

Pay your loans, then pay your future. Once student loans are paid off, use that dedicated monthly payment towards professional development. Instead of paying for the education that got you where you are today, put a monthly payment toward new experiences that will get you where you want to go.

Intentional tax refund. Do you remember what you used your tax refund for three years ago? Tax refunds simply mean you have more money in your budget. Use that tax-refund you received in the spring towards growing your career.

Part of the package. If you are an employee, negotiate a professional development allowance into your compensation package next time you have a review or apply for a new job. What employer wouldn't want to give an allowance or match their employees' funds to make them a greater asset to the team?

Related: Meditation Isn't Just For Hippies: Here is How it Can Help Entrepreneurs

Eddy Ricci, CFP ® is a founder, author, leadership consultant, talent acquisition specialist and angel investor.   He empowers entrepreneurs, executives and professional service practitioners to upgrade their businesses, careers and lifestyles through leadership consulting, firm building and talent acquisition.  He is the author of The Growth Game: a millennials guide to professional development and Miss Money Plan and the battle against emotion, a superhero-themed financial literacy book for kids.    

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