Line 2. This line might be like Zen-master Dogen's "beyong thinking".
See also 40.1.
Line 4. 'Field' or hunt.
Line 5. Or: 'determination about steadying one's character'. Women folk, Man and son. (B.Hatcher: woman of maturity, man in youth. Man and son is FūZi which is also Confucius)
Line 6. continuously stimulated, Wilhelm: restlessness as enduring condition. The character is hand + thunder: shake, stimulate; vibrate; activate, relieve (famine/etc.), restore order, terrify, abandon. The meanings seem to indicate a changing situation: not good for persevering.