Look at the sea: look up. Look up at Poseidon and sigh. The original intention is to sigh your smallness in front of great things. Doing things now is more like feeling helpless because of incompetence or insufficient conditions.

There is nothing you can do.

Can't exert force. Incite or fail to do something well or solve a problem.

be beyond one's power

I want to do it, but I don't have enough strength.

out of reach

And: to. Although the whip is long, it can't hit the horse's stomach. Metaphor is too far apart, and strength can't be reached.

There are two places missing at the same time.

You can't separate your body to do different things.

sb's hands are tied

Have wishes and plans, but have no power to put them into practice.

The heart is willing, but it can't.

I'd like to do it, but I don't have enough strength.