1. Use a metronome.
2. Practice in small chunks.
3. Play your scales , chords and arpeggios in a focused musical fashion by varying the rhythm, dynamics, articulations and balance between the hands.
4. The greatest shortcut is "Bench time". In other words, more practicing.
5. Never ignore correct fingering.
6. Posture and hand position are important.
7. Be aware of your breathing.
8. Listening to music away from the piano. Try to identify the form, dynamics, articulations in professional performances. It really will help you to play more musically.
9. Record your practicing.
10. Enjoy the journey.
Most neglected and overlooked by students
4. Connecting theory with the music
5. Slow practice
My top four activities in practicing
1. Ear training
2. Slow practice
3. Bench time