As Lailatur qadri as one of the best chance a muslim can have in a lifetime, it stated in the Quran that lailatul qadri better than 1000 months, which more years than average human lifetime. What is prophet Muhammad SAW suggestion on preparing for this special night.

Make sure your intention when doing a "good" deed for Allah subḥānahu wa ta'āla (glorified and exalted be He) and be careful not to ruin it with a wrong intention. Because with wrong intention, your good deed will become a waste.