How to Practice Successfully:
1. Set Goals - What are you hoping to achieve?
2. Small Sections - Measure by measure, not page by page!
3. Slowly, then Speed Up - Accuracy first, speed up.
4. See the "Stain" - Listen, then go directly to the tricky spot.
5. Stop and Listen - does the sound you hear match the picture on the score?
6. Success Comes by Correct Repetition - Repeat, repeat, repeat!
For further reading:
How to practice better!