I fear not the man who has practiced 10,000 kicks once, but I fear the man who has practiced one kick 10,000 times. – Bruce Lee
Practice makes a man perfect. It is one of the most ancient idioms. Everyone who has ever succeeded in life has not achieved it overnight. There is a lot of intense training, failures, great falls, and comebacks even greater behind their success. If they have never tried after falling to make it perfect, they would have never won anything in their whole lives.
However, there are two types of people, ones who are practicing their strengths many a time in a day. Also, there are people who practice a thousand moves, and they master none. You can relate “jack of all trades master of none” here.
Now, if there is a competition between these two types of people, the first one will come with one move but is a master of that move. However, the later one will come with various moves but, (s)he will not properly complete even one of them. This will emerge as a major disadvantage in the competition for the later one.
Moving forward is important. In order to grow in life, we all have to learn new things and practice them.
However, if you opt for new moves without properly mastering the old ones, you will start learning the ultimate move before you can even properly portray the first ones. This way, you will never learn those first moves.
However, if you have mastered the basics properly, the advanced moves will become easier for you eventually.