hard at it
Energetically engaged in or working on something; going at it.
I became quite successful very young, and it was mainly because I was so enthusiastic and I just worked so hard at it. Francis Ford Coppola
I wouldnt say that I was a born performer, because I work very hard at it. Anneliese van der Pol
I think life is full of challenges and problems. I don't believe that anyone is perfect. We all make mistakes. It's not a bed of roses, and you have to work real hard at it. Nigel Mansell
I'm not a writer where I feel particularly blessed by great inspiration every day. I don't. I have to work really hard at it to try and say the things I'm concerned with. PJ Harvey
When I'm doing something, I do work hard at it. Simon Van Booy
I learned that the only way you are going to get anywhere in life is to work hard at it. Whether you're a musician, a writer, an athlete or a businessman, there is no getting around it. If you do, you'll win - if you don't, you won't. Bruce Jenner