Warren Buffett has taught us many valuable lessons about success over his long career as the world's top investor.

One of those Buffett lessons urges us to reimagine a better future by challenging us to consider whether we have chosen the right job or career. Here's Buffett:

"In the world of business, the people who are most successful are those who are doing what they love."

For many of us toiling up the corporate path and burning the candle at both ends, we take for granted our job security while secretly wishing we were doing something else -- something we actually loved.

Looking back at your life when it's all said and done, will you tell yourself with great pride that you made the right career decision?

Doing what you love is a major reason for your long-term happiness. And knowing what you love should be your first step toward self-discovery. After all, if you don't know what it is you love, the path ahead may be unclear. 

There are several reasons why you should consider doing what you love, including:

1. You become more optimistic.

People who do what they love are more open to opportunities and new experiences; they are willing to accept challenges and take risks, which are predictors of greater earning opportunity.

2. You become your true self.

When you do what you love you start to get more in tune with yourself. You create alignment between your work, values, and the things of which you're passionate. This opens up a world of new possibilities as you learn, at the core of your being, what it is that you want out of life.

3. You become more motivated.

Loving what you do releases discretionary effort -- you become more motivated to succeed by putting in more time to get work done. The difference is that you do it because you want to, not because you're taking someone else's marching orders or feel obligated to do it. On the contrary, you have an intrinsic desire to be more productive because you believe in what you do -- you know your hard efforts will make a difference in the world and for those whom you serve.

4. You will succeed, plain and simple!

Getting back to Buffett's original point, when you love what you do, it just doesn't feel like work. If you own a business, it makes it that much easier to get through the ups and downs of entrepreneurship. And since you are your own boss, you can motivate yourself to reach your fullest potential. And when you do, success is just around the corner.