Anxious Helper (3.5e Flaw)
From D&D Wiki
Oh dear, oh dear, oh dear what do I do what do I dowhatdoIdo!?
Effect: Characters with the Anxious Helper flaw can not grant a flanking bonus, can not give bonuses for cooperating with skill or ability checks, and take a -4 penalty on heal checks when healing other characters.
Roleplaying Ideas: You hate to be a bother so sometimes it's better not to bother at all.