mastering the positions will lead to PRs.
Everyone wants yank the bar off the ground for their snatch or clean and jerk from day one. I can't say that I blame them, I mean the lifts are pretty sexy - lol. But in order to be able to lift heavy weight and what you're capable of - it's important to learn and understand all the different positions - from both a mental and a physical level - to know mentally what the positions are but physically be able to know them as well.
There is so much going on in a snatch and in a clean and jerk, and every split second the body is in a similar but completely different position.
Take the time to learn and cement in each of these positions. It will pay dividends later down the road