Never act until you have clearly answered the question: What happens if I do nothing?

As long as you are convinced you have never done anything, you can never do anything.

If you put off everything till you're sure of it, you'll get nothing done.

Those who are attached only to the result of their effort will not have any chance to appreciate it, because the result will never come.

If you stop to consider the ramifications, you’ll never do anything.

A man may not know what will happen as a result of other people’s actions or as the result of unknown causes, but he always knows all possible results of his own actions.

You can also commit injustice by doing nothing.

If you change nothing, nothing changes

And you can also commit injustice by doing nothing.

The one path that never works is the most common one: doing nothing at all.

Take Action: Success is not guaranteed but inaction will guaranty failure.

You won't get anything done by planning.

And you can also commit injustice by doing nothing. (Hays translation)

Nothing so effectively economizes effort and intelligence, as distinct from anxiety, as the knowledge that nothing can be done.