It is within our power to do either, but we can't do both. So let's make it a time of being as close to God Siva as we possibly can. You can make your mind a perfect place, full of thoughts of God within, so full that other thoughts seem insignificant by comparison. On Sivaratri night, chant silently Siva's perfect mantra, Aum Namasivaya. We want to enjoy ourselves on Sivaratri night.
Spiritual life is joyous life.
The more joyous we are, the closer we are to the Source of joy and bliss. So, be happy on Sivaratri. Sing with a full heart. See God in everyone and in everything. Forget all the problems life brings.