Make Hay While the Sun Shines
Opportunities make their appearences once in awhile and vanish before long. They do not come for the mere asking. those who are alert, agile, smart and on the lookout for opportunities,  catch and put them to best use, while lazy, lethargic , inactive and weak wait for them to come and share bed with them.  The secret of all the successful men the world over is that they do not lazily wait and watch but act, move and grab opportunities. 

One should not keep on crying over spilt milk, as this is futile and one should do one's  best leaving  no stone unturned while the time is favouring us. We should know to play our cards carefully else we may have to repent  and suffer irreparable loss. We must be very watchful of the sun when it shines and then make hay.