i keep on having shor LD i dont wake up i just lose lucidity and it happened 2 last night and i had 3 ludid dreams on monday but they were both short and one i lost lucidity. so how do you prolong them and how do i stop losing lucidity! 
- Try rubbing your hands together next time
- Spin around that might help
3.Keep aware that you are still dreaming and observe your surroundings