You retain some of your knowledge and skills from when you were alive. Choose proficiency in one additional skill. While calling on experience from past lives, your proficiency bonus is doubled for ability checks made with that skill. Alternately, you may take a feat.

Two ability scores of your choice increase by 1.

Humans reach adulthood in their late teens and live less than a century. As a ghost, you have stopped all physical aging.

Ghosts tend toward no particular alignment. The best and the worst are found among them.

Humans vary widely in height and build, from barely 5 feet to well over 6 feet tall. Regardless of your position in that range, your size is Medium. Your ghostly form likely maintains the stature you had in life. 

Your base walking speed is 30 feet. You also have a flying speed of 30 feet.

You no longer have a corporeal form. You can wade through solid walls or surfaces as though they were difficult terrain. If you end your turn in such a surface, you take 4d10 force damage and are ejected into the nearest unoccupied space.

You can speak, read, and write Common and one extra language of your choice. 

After dying, you gained the ability see in the dark. You can see in dim light within 60 feet of you as if it were bright light, and in darkness as if it were dim light. You can’t discern color in darkness, only shades of gray.