Coming from a liberal arts background myself, I would actually suggest AGAINST getting a degree in something you're passionate about (as many folks here have suggested). Unless that something is also a field where you KNOW you'll get a great job in it. And I hate to say it, but it typically isn't one of the traditional liberal arts (history, english, law, political science, art)
I have a very good friend who is passionate about history - do you know how many jobs are available? Almost none. She was pressed to go to law school because she had no other viable choices (especially given high student loan debt). She hates her job and she's stuck b/c now she has over 100K in student loan debt (and she went to a state school for law). She's not the only friend I have who is in a similar position - financially stuck because they chose majors they loved, versus majors with employment opportunities.
I respect studying liberal arts because I think it teaches people how to think critically, and also how to communicate, but I am very hesitant to recommend anyone get a degree in these majors right now. I have a hybrid Computer Science/Business Administration degree, and it has served me very well these last 15 years. I like it fine, but it doesn't define me. I try to always do my best, but I don't take it personally but I'm not over the moon about it, either. It's a means to a (hopefully successful) end.
So my advice would be - find something you like well enough, but more importantly THAT WILL PAY YOUR BILLS. Your job doesn't have to define you, so keep an eye on what will get you hired - you can follow your passions as your hobby. Might work out better that way anyway (since you have control over your hobbies).