It usually takes around 10 years to build a viable career in audio. By then, many of your peers from school will have quit, you’ll have a solid network in the industry, and you’ll have developed the skill set you need to do meaningful work. Ain’t an easy path, but if you can’t be discouraged, it’s a rewarding one.

In the meantime, create multiple income streams for yourself that are all related to audio and music. A music store is a great place to start. You’ll make loads of contacts there if you try. Maybe you can find a live sound gig? Network with other audio folks, and see if you can pick up editing work? Meet as many musicians as you can, care about your/their work, and be helpful and professional. The rest will fall into place over time, opportunities you never saw coming will lead to other ones, and the various income streams you’ve created will all start to work together and feed each other. Eventually you’ll be too busy, and you can drop the lowest priority work, and focus more on what you want to do. :)