Now for a real rules-lawyerly question for you to pick over: can you help yourself with the help action in combat? Here is the text:
RAI, I think you probably cannot help yourself. But note the distinction between “another creature” in the out-of-combat text and, for the in-combat text, “friendly creature” and “your ally.” Normally, I believe you count as your own ally. So does that mean you can use the help action to help yourself? The most obvious use case is probably if you can take the help action as a bonus action.
HELP
When you take the Help action, you aid another creature in completing a task. The creature you aid gains advantage on the next ability check it makes to perform the task you are helping with before the start of your next turn.
You can also help a friendly creature in attacking a creature. You must be able to target the creature with a melee attack, or otherwise threaten it. If your ally attacks the target before your next turn, its next attack roll against the target is made with advantage.
RAI, I think you probably cannot help yourself. But note the distinction between “another creature” in the out-of-combat text and, for the in-combat text, “friendly creature” and “your ally.” Normally, I believe you count as your own ally. So does that mean you can use the help action to help yourself? The most obvious use case is probably if you can take the help action as a bonus action.