How can you overcome your lack of experience to reach the beloved/interested job/specialty ?

Very good question. You should first workout to identify the gaps, than work to bridge those gaps to reach your destination. One has to work in a proper way, there is no shortcut. 

First see your current capabilities, identify what capibilities required to perform that ideal Job, List down the gaps if any, start closing those gaps by gaining knowledge and experience.

You can attain that by , immidiately jumping into the existing pool of knowledge of that specific field available via medium of Books , internet , group discussions etc .

Try to pace up with the new technical advancements discovered in that field . 

With a little dedication , lot of hard work and a pinch of awareness will frutify your result . And you will find yourself among those called Professionals of that very expert field or area .