Think back to all those selfish, self-serving decisions you have made in life thus far. Really look deep.

Now count the times where you did it to better yourself, whether it was for personal growth or for professional.

Take into consideration all the fallout that happened as a result; regrets, the good, bad and ugly i.e new friends (or enemies), lifestyle change etc. Now, ask yourself if you would do it again. Was it all worth it?

Knowing your own self-worth and using it as a guide when faced with tough choices will, at a minimum, provide you with a road-map to achieve your goals, continue succeeding and make your life long and the journey that much more interesting.