Turning 30 years old is a significant accomplishment. It means the three stupidest decades of your life are over, and you can finally start being a real adult with an actual frontal cortex. While most 20-year-olds are in similar life situations (having horrible service jobs, slugging through college, praying their fake ID won't get taken away), one 30-year-old can be in a very different place in life than the next. Some people are married, own a house, and have three kids by age thirty. I'm 22,…