Are we learning to be 21st century teachers?

So how do I become a 21st century teacher when alot of what I am learning is 21st century theory but what I have to practice is not. I would love to do a thematic unit integrating all subjects and using technology. I have big ideas and want to put them into practice but the educational system doesn't allow for complete control.

I also want to be a more civic minded teacher and person but starting is so hard especially when I am so so busy. I have to find balance and balance does not entail doing any extras. In the future I hope to be.