How to find enjoyment in teaching being a research oriented professional? I have recently (one year ago) started work in academia as an assistant professor or a lecturer in NZ system. We don't have tenure track system which is great. I was wondering how long does it take one to get used to academia. I will clarify my question. 

I really enjoy research and working with the research students. Also, I have secured a large research grant. However, I never considered teaching as a career. Having said that, I would enjoy teaching if I had an opportunity to design my own course. Currently I have to teach courses which are given to me. I found that teaching takes up lots of time and my research outcomes plummeted as I have no consistent free chunck with no interruptions. Not sure how to cope with exhaustion of having to give a lecture. 

Any suggestions how to balance research and find enjoyment in teaching?
I would not worry about enjoying teaching. If I were you, I'd optimize my teaching first. You need to identify the time consuming parts and simplify them as much as possible. Use help from senior faculty as much as you can. Here is what I would advise myself if I were to teach again.

First, you need to set boundaries. You must be available for students only during office hours. You'll get many emails. Answer only the ones with special requests (e.g. make up exams for disabled people) and tell the class you'll resolve all else during office hours.

Grading is a time black hole. Do not grade homework and quizzes - use some automatic system, or offload it to your teaching assistants, they'll love you for that. 

Do not make up problem sets or even exams. That takes a lot of time and it's likely you'll make mistakes which will upset your students. 

You should not try to exhaust the subject in class. Even if it tempts you, you should not spend time searching for ways to make the class interesting. The objective is that your students understand the basic concepts you are trying to teach (enough to solve course problems). Any nice new experiment or class project would take a lot of time to prepare and it's only worth doing it if you have a lot of help from enthusiastic students and teaching assistants.