Gravity Well doesn't impose a limit on the number of creatures it can affect. That means there's not a limit. #DnD https://t.co/kCyLHsqzZT
— Jeremy Crawford (@JeremyECrawford) March 17, 2020
In the D&D rules, your character is a creature.
If a feature, like the paladin's Lay on Hands, works on any creature you touch, then you can use that feature on yourself, provided you can reach yourself. #DnD https://t.co/bVGGbTyubD
— Jeremy Crawford (@JeremyECrawford) March 19, 2020