Starting over is tough. I had to do it at 47. When you have to do it, it helps, b/c you have no choice. If you really hate what you’re doing, think of it as now having the opportunity you wanted before. You can go any direction you want. Consider your choices, decide what you want to do, and go for it.
There’s a famous story about a woman who wanted to go back to school and finish her degree. She went to talk to the dean at her local college and told him, “I want to finish my degree, but I need 36 more hours, and I can attend only part-time, and it will take me 4 years, and in 4 years I’ll be 42 years old!” The dean said to her, “Let me ask you–how old will you be in 4 years if you *don’t* go back to school?”
So you see, it doesn’t matter that you’ve had a false start. What matters is what you do from this point forward.