Study Regularly, Study Often

All other things being equal, the one factor that determines success in learning a foreign language is regular exposure to the language. The average person learning a language by self-study will benefit the most from at least 30 minutes of study per day, at least five to six days a week. That said, studies also show that 30 minutes is about the maximum time most people can focus on learning tasks without taking a break. So if you study for longer periods, take a ten-minute break every 30 minutes to keep your learning edge.