Never Forget Your First Resolution in Chinese / Japanese...

初心忘るべからず is an old Japanese proverb that suggests you try to never forget the enthusiasm you had as a child when you try new things (or even face the day-to-day). Basically, avoid having the mundane attitude that many people get with age.

You'll find this Japanese proverb translated in a few different ways. Here are some of them:
Don't forget your first resolution.
Never forget your childlike enthusiasm.
Forget not the beginner's mind.
Try never to lose your initial enthusiasm (freshness of attitude).

Note: This is sometimes written as 初心忘る可からず. The one shown above is used about 10x more often. There’s only one character difference between the two versions.

Note: Because this selection contains some special Japanese Hiragana characters, it should be written by a Japanese calligrapher.