Your story may be similar to mine. Your years of hard work, of craft, of study doesn't do you much good if you're not getting the job.  If you are just starting your journey, if you are a student, if you are a  professional don't waste time and money. Being a business-minded artist will allow you to be pro-active and take your power back as a performer.  It will relieve many of the stresses you may be feeling and it will free you to be the best you can truly be.