anxious; worried; apprehensive

misgivings; apprehensions; to worry about; to be concerned about

hesitation; misgivings; doubt

to worry; anxiety (about)

(idiom) carefree; without worries

mature reflection; after careful deliberations

to worry unnecessarily

neurosis; anxiety

to think over; to consider; anxiety

worrisome

to think sth through; to consider carefully

(feel) anxiety; concern

to worry about

to free the mind from worries

profound thoughts or ideas

careful thought

to plan and consider; to reflect on one's best strategy

long-term considerations; to take the long view

hypochondria

to give no cause for anxiety; nothing to worry about

to give sufficient consideration to

reflect a thousand times and you can still make a mistake (idiom); to err is human

a thousand tries leads to one success (idiom, humble expr.); Even without any notable ability on my part, I may still get it right sometimes by good luck.

to plot actively (idiom); scheming; calculating

security concerns; safety considerations

(idiom) carefree; untroubled

at dawn, not sure of lasting to evening (idiom); precarious state; imminent crisis; living from hand to mouth

see 杞人之憂|杞人之忧[Qi3 ren2 zhi1 you1]

to exhaust one's thoughts and ingenuity (idiom); to think sth through thoroughly; to rack one's brains; to leave no stone unturned

to exhaust one's thoughts and ingenuity (idiom); to think sth through thoroughly; to rack one's brains; to leave no stone unturned

lit. deep plans and distant thoughts; to plan far ahead (idiom)

worried too much

generalized anxiety disorder (GAD)

He who gives no thought to far-flung problems soon finds suffering nearby (idiom, from Analects).; Smug concentration on the here and now will lead to future sorrow.

lit. a wise person reflecting a thousand times can still make a mistake (idiom); fig. nobody is infallible

(a line from a poem by the Tang poet Liu Yuxi 劉禹錫|刘禹锡[Liu2 Yu3 xi1]) one gains very little insight into one's enemy from a hundred victories, but he who breaks his arm three times will be a good doctor; (fig.) one learns more from one's failures than from one's successes