<human>: I'm fairly young (25).  I had a professional-level but part time job in a public library for 3.5 years (mostly while still in college), and for the last 18 months of that did contract work in small libraries to supplement my income.  In March 2012, I started a full-time job in an academic library.  I was incredibly bored, started to get depressed in my mindless boredom, and moved out of state to a full-time position in a public library in September 2012.  I started work on a Master in Library Science at that time as well (as it was the only way to advance my career in libraries), which is part of what helped me land the new public library position.

Now I'm discovering that I do not want to be a librarian.  I loved what I got to do at the first library (built a social media presence, organized marketing initiatives, did a lot of work on a website redesign, did event planning and program development, and did community work/community building) - and I've loved the moments when I've gotten to do those things in the jobs that followed.  But two semesters into the degree, I realize that I just can't make myself care about the rest of the profession.  So much of it feels stubbornly dated and needlessly academic, and too little of it is reaching out into the community.  Plus, I'm good at marketing/writing/social media stuff.  We did work in that first library that got recognized by organizations all over the country, and I was basically just making it up as I went along.  I did my research and was very careful, of course, but I did it without a marketing supervisor or mentor who had done such things before.  I'm proud of that, and I really enjoyed it, and I want to see if I can do it again.

So I've decided to start looking again, in the state I moved away from in September.  I'm worried that potential employers will look at my job history and dismiss me out of hand.  How can I address that in cover letters?

Can you provide a brief rundown of the text in within 3 sentences?
<bot>: I've discovered that the reason I've been job hopping is that I'm not in the right field for me.  How do I address my brief employments with my last two employers in a cover letter and in interviews?