It doesn’t matter. You may be Bill Gates, but the best money of your life will always be your first. Not the second, not the latest, not the largest. The first.
You first salary means freedom, means someone is willing to pay for your work, it means you’re part of the game now.
When someone decides to become a ProBlogger, the first AdSense Dollar is the best, also. And believe me, it takes a lot of time to get there. Clicks in Brazil are underpaid, some are as low as US$0,01. The first Dollar takes a long time to be reached. Meanwhile your friends will think you’re crazy, counting cents and clicks dropping like coins in a panhandler… pan.
I still remember my first salary, and still remember my first AdSense Dollar. Both share the same exact sensation.