I sympathize. My major is even more "useless", though not to me. I have a humanities degree and a fine arts one, so both are stereotypically made fun of. But, I think my strength lies in being business savvy, so I've found a niche market to run my own business, and I make more than I can working traditional jobs. But, it comes at the cost of being in an area where I can meet other young people or have time to network professionally. And since I work for myself, I worry about making the jump to employment elsewhere if I choose to do so in a few years.
I'm a planner, so it helps to give myself time frames. For example, I have until August to have a more reasonable work/life balance (not work 60 hours+). I have until June to work in some type of professional networking (social or otherwise). It helps remind me that everything does come in phases and that I have control over my situation. In the meantime, I do my best to live happily off a minimum wage salary, and I save the rest, just in case, as I definitely don't want to take my current job for granted.
I wouldn't say I'm qualified to give any advice to anyone else my age as I'm still barely figuring things out as I go, but despite my laughed-at degrees, I found a way to provide a service that is irreplaceable and profitable.
The hardest part about graduating is making life decisions in this seemingly endless stretch of work life until retirement. There are days when I miss being able to say "I just gotta make it till the end of this trimester". I have to find new ways to mark goals and achievements (:
Sorry for the long winded answer! I graduated last June, if that helps any.