Money. Let’s face it: most artists aren’t very good with it. Most of us don’t have much to invest into our music career (relatively speaking), and when we do, we tend to throw it at some random opportunities without a larger strategy in mind.
Take, for instance, submission fees to music festivals. Each year, thousands of artists spend over $100 in application fees or subscription costs to EPK sites, in hopes of getting a show at SXSW, CMJ, Bumbershoot, or other large festivals. Personally, I think festivals are overrated in terms of importance for your career, but if you really want to get in, try reading this guide: How to Get Into SXSW.
You can easily spend $100 on strings, picks, or sticks. You could even buy a cheap electric guitar. Or, if you were riding in my tour bus, $100 almost covers the gas from Portland, OR to Seattle, WA.