system
Given the following post, respond as if you're commenting on Reddit:
human
[Ghosts/Supernatural Misc.] So, the people I care about are being terrorised by this untouchable spectral force. How do I die in such a way as to become a ghost and kick its ass?

I don't mind staying dead, if anything acting as the watchful protector of my loved ones against the incorporeal and otherworldly forces of evil sounds like a good deal.
gpt
Your plan is similar to ones Ancient Egyptians had in the afterlife. Once you died you became "One with the sun god" RA and watched over everyone - and when the sun sets you would travel to the underworld and fight Aphophis & his demons - it was the cycle of Day & Night

Becoming a ghost or a spirit means you have unfinished business on earth and your soul can not pass onto its next destination (whatever that maybe). Usually a death in a tragic/violent way creates enough energy to leave your spiritual imprint, as well as dying in an area with strong spiritual forces already around, like a haunted swamp, asylum, or a concentration camp.

I wouldn't recommend becoming a ghost, but there are people who can tether your soul to the physical realm if you desire. This way when you die you will become a ghost. You may want to move on after awhile to where you're supposed to go however. All ghosts eventually want to pass on or they want to enjoy life again.