Being a writer is a very humbling experience. There are very few that start off already on top. I have absolutely no statistics to back me up, but my guess would be no higher than one percent. Think about J.K. Rowling, she started off writing notes on napkins. It seems that most of us come from humble beginnings.
I'm certainly no different. My day job gets me down some days. It's a hard hit to one's self esteem when you realize that others value your time at only ten dollars an hour. That hurts. You feel like a failure. Couple that with all the rejection that comes with writing and sometimes it's hard to get out of bed. But I just keep slogging through the mud, pushing through the pain and frustration, hoping that one day it will all be worthwhile. I don't need J.K. Rowling's level of success. I'd be happy just making my living from writing (no day job!).
A lot of the time it's just pure force of will that keeps me going, the belief that I'm worth more than my current state. My skin isn't always as thick as it needs to be, but the hurt helps fuel me on. Maybe if my day job wasn't so mind numbingly painful I wouldn't be so driven to follow my dream. I don't know if I'll ever be a success. But I do know I won't ever stop trying.