Any thoughts for someone who is in full time ministry and wanting out?
Yes, I do.
It's a big decision to make, one that took me several years. It's a decision that contains multiple layers, and each of them require some serious thought and consideration. Doing so is a revealing process, as it will lead you to motives you may not have been aware of.
Your first point of clarity is knowing why you want to get out. Are you bored? Are you disillusioned, maybe tired of being broke, or are you just fed up with the assholes in your church? These reasons need exploration, and that search needs to be done with a trusted voice who will let you talk it out completely with out judgment. I try my best to be objective, even though I made the choice to leave, I'm smart enough to know that my decision is not the right one for everyone else. Who knows, you may just need a good vacation in order to feel better about your lot in life. But I would doubt it.
A second layer to peel back is knowing where you want to go. Leaving is one thing, having a destination is another. I left because I had a compelling notion to start something new, completely unrelated to what I did before. It pulled me out, and forward. Even though many would not understand, it gave me a justification that I could rely on and defend in my own soul, which is essential, because there will likely be many lonely days ahead once you launch out.
A third aspect of which to be aware is what other people think. The good spiritual answer is that we are only supposed to care about what God thinks, but if you have helped people in their faith development, that is not something to be taken lightly. You will need to be able to communicate to these folks why you are making the shift. You can't just leave and expect them to fully understand without giving them a reason why. People will have to make their own choice about what they think about your decision, but how you consider them is yours.
I know this oversimplifies it, but I wanted to acknowledge your question and say that leaving vocational ministry is not the end of the world, despite what you may have been led to believe. I was always beat over the head with the verses on perseverance, and diligence and how if you take your hand from the plow, you are not fit for the Kingdom. These can be easily taken out of context and made to apply to your vocation and not your deepest soul. Leaving your ministry position may be the very thing to put you back on track toward renewing your faith. I know it did for me.