There are no such a magical thing that can make a pianist become pianist master in a day but sure there is a way to quickly mastering the piano when you find a good teacher in your piano lessons. You may think that making a cake is really hard especially if you are not used to the every ingredient but once you are teach by professional cake maker you only need a few days to get used and soon you will get to the new level.
Traveling around to the unknown forest can make you lost and the worst it can wasting your time and effort for nothing but once you get a good guide or expert forest ranger they can show which path you should take and which one you should avoid.
It is same in the mastering piano lessons, you need to find an expert to teach you how to play like world class player and improve you level to the whole new one. It is impossible to be master in a day but it is possible to become a better pianist today.
Here are a good site to help your piano lessons and on this site you can check many tips about Piano rhythm, online piano lessons, sweet sounds of jazz improvisation, practical guide to piano playing, Mastering the art of piano sight reading and many more from famous piano teacher Yoke Wong.