Several spells, like Healing Word and Hold Person, require you to see your target. Does this mean that you aren't allowed to target yourself with spells that require you to see your target when you're blinded or invisible? For reference:
A creature of your choice that you can see within range regains hit points equal to 1d4 + your spellcasting ability modifier. This spell has no effect on undead or constructs.
Choose a humanoid that you can see within range. The target must succeed on a Wisdom saving throw or be paralyzed for the duration. At the end of each of its turns, the target can make another Wisdom saving throw. On a success, the spell ends on the target.