Do not look back upon what has been done. Go ahead!

If you put something on your mind and your heart to do and to change something or situation, do not look back, stay focused and move systematically towards your goal.

What's done is done. What's gone is gone. One of life's lessons is always moving on. It’s okay to look back to see how far you’ve come but keep moving forward.

Do not look back. And do not dream about the future, either. It will neither give you back the past, nor satisfy your other daydreams. Your duty, your reward — your destiny — are here and now.

Give up the past! Turn to the future! What is done is done. Bitterness will not undo it.

When a thing's done, it's done, and if it's not done right, do it differently next time.

You can't look back - you just have to put the past behind you, and find something better in your future.

What's done, is done

"Don't look back!"
"Why not?"
"Because I just did! Run faster!"

It's done, when it's done.

I’m not looking back because there’s so much going forward that I need to get my arms around.

If you’ve found meaning in your life, you don’t want to go back. You want to go forward. You want to see more, do more.

When you work, work hard. When you’re done, be done.

Don't look back—forward, infinite energy, infinite enthusiasm, infinite daring, and infinite patience—then alone can great deeds be accomplished.