Being nervous before starting any new job is normal, especially if you've been off any length of time. I was out of work for 16 months due to addictions and mental health issues before I went back to work full time, and I was terrified.

But I still think you should take the job. Just take it one day / step at a time, and do the best you can while acknowledging to yourself that it is going to feel uncomfortable. If you hate the job, feel you can't handle it, after two weeks, then you can always quit.

But the thing about fear, is each time we face our fears and go ahead and do it anyways, then the easier it gets.

Good luck.

--splitimage