That is meaning.
Ask yourself each day, “What remains unexpressed within me?”
Whatever it is, bring it out. But be judicious. The rantings of mad people do not yield greater freedom. Those who are with Tao use expression to find greater understanding of themselves and so find liberation from ignorance and circumstance.
All that is good and unique in you should be brought out. If you do not do this, you will be stunted. Never hold back, thinking that you will wait for a better time. The good in you is like the water in a well : The more you draw from it, the more fresh water will seep in. If you do not draw from it, the water will only become stagnant.
What is dark, perhaps even evil, inside you must be expressed in a proper way too. Lust, hatred, cruelty, and resentment — these must all be carefully taken out of yourself, like finding a bomb and taking it to be detonated harmlessly. Your heart may be quite a mine field, but you must persevere in clearing it if you are to plant crops and frolic without concern.
Ask yourself each day, “What remains unexpressed within me?” Unless you can express it, you will not clarify your inner nature.