Usted buscó: lesson learned the hard way (Inglés - Latín)

lesson learned
lectio magistralis

lesson learned from experience
lesson learned from a bad experience

no regrets in life just lesson learned
non paenitet iustus discitur

just lessons learned
non paenitet in vita sicut lectiones didicit

the hard life, do not farmers make a fortune
agricolae a fortuna dura vitae non egerunt

and it shall come to pass in the day that the lord shall give thee rest from thy sorrow, and from thy fear, and from the hard bondage wherein thou wast made to serve,
et erit in die illa cum requiem dederit tibi deus a labore tuo et a concussione tua et a servitute dura qua ante servist

friendship is the hardest thing in the world to explain. it’s not something you learn in school. but if you haven’t learned the meaning of friendship, you really haven’t learned anything.
durissima res in mundo est amicitia explicare. non aliquid discis in schola. at si quid amicitiae non didicisti, nihil vere es.