The more, the better
Say what you will, but nothing will help you improve faster at your instrument than regular practice. Ideally, this would mean every day, but because this is not realistic for the average student, at least aim for every other day. Remember that when it comes to practicing, higher frequency and shorter duration always beats lower frequency and higher duration. In other words: it is much better to practice 4 times a week in 30-minute intervals than two times a week in 60-minute intervals.
Time-Blocking
But what can we do to make ourselves practice more often? Where do we get the discipline to just sit down and do it? The method that has worked best for me and many of my most successful students is something called time-blocking. Time-blocking simply means choosing a time in your day which would be dedicated exclusively to a particular activity, which in our case is practicing. Say to yourself: “Every day between 8-9pm is my practice time. During this time, I will get rid of all distractions and dedicate myself fully to my instrument”. When you practice time-blocking often enough, it will become as effortless as brushing your teeth and will require very little discipline to implement (which is the whole point!) Parents: use time-blocking to set up a regular practice routine for your children. Yes, they will resist and probably cry at first, but it will eventually become second nature and the results will be worth it!
To learn more about time-blocking and how it can help you achieve your goals, check out an awesome book called “The One Thing” by Gary Keller.