Having exactly $0 to your name immediately after graduating actually puts you significantly ahead of the curve.

>I feel so ashamed & guilty about this because I spent so much money the past 4 years on shits and giggles when I should’ve been saving.

It's hard to beat the dollars/fun ratio of money spent on shits and giggles during your college years. You have your whole life to earn all the money you want, but all the money in the world will never buy you a single new college memory. If you had fun in college and made it out with a degree and $8k, you're rich beyond measure.