Congrats, 3 years is great. It was about 5 years in for me that I felt like I was over the "hump." Being completely exhausted at the end of the week, frustrated with parents and situations out of my control, etc. In August, it will be 10 years for me. I worked as a nanny for several families for about 7 years before that, too. And had a couple of p/t jobs in centres and nursery schools. And of course babysitting all through high school.
I count all of it as experience, in one way or another, I have been looking after other people's kids for nearly 30 yrs. I have even had a child in my daycare who's dad is someone I babysat in high school.
I too have thought from time to time that I should get a job somewhere else. But it all comes down to one thing. I don't want to work for someone else. Within the laws, I can set my day up pretty much however I want it. For the most part, I get to spend my days with the cutest, funniest little humans and when everything is going well, (like now) it is the BEST job ever. I hardly feel like I'm working.
So now that I have jinxed everything... I have also found this wonderful forum that I can used when everything falls apart. Cheers!