My advice is to expect what you can control:
1. Expect to find a job that will give you financial stability (this may or may not be in the entertainment industry- see a previous post when I covered industry jobs for writers)
2. Expect to commit to a writing ritual- in other words how much writing do you plan to do and how often?
3. Expect to invest in your career- this may mean joining networking organizations, becoming a guild member, taking educational courses for both your craft and your business, and the material costs of having a writing business
4. Expect to update your material often, adding to your writing portfolio- this may mean new scripts or re-writes on older ones
5. Expect to be a business which, like a business in any industry, requires relationships, product, marketing, patience, perseverance, and a team (just to name a few)
Even though I answered this for a writer, this blog applies to all classifications in the entertainment industry.
for more tips and articles by top entertainment industry career coach, the Greenlight Coach, visit www.thegreenlightcoachblog.com