Here and now

Immediately.I plan to do the work here and now.

Hem (someone or something) in hem in (someone or something)

To trap or enclose someone or something.We went to the football game but we felt hemmed in by all of the people.

Hem and haw

To avoid giving a clear answer, to be evasive in speech.The man hemmed and hawed when I asked him if he knew where the missing money was.

Helter-skelter

In a confusing group, in disorder.When we arrived at work we found the files scattered helter-skelter over the desk.

Help out with (something)

To assist someone to do something.I helped out with carrying the luggage of the tour members.

Help oneself to (something)

To take whatever one wants or needs.We went to the buffet table and helped ourselves to the food.

Hell-on-wheels

A bad-tempered or nagging or crabby person.The woman is hell-on-wheels in the morning so you should be careful of her.

Hell on earth

A very unpleasant situation.The hot weather made the small town like hell on earth.

Hell-bent for leather

Behaving recklessly, riding a horse recklessly.The boys went hell-bent-for-leather down the path to the beach.

Hell and high water

Troubles or difficulties of some kind.The relief workers went through hell and high water in order to get the food to the flood victims.