When it comes to salvation, no man will ever be good enough. Being prepared is a matter of the heart. We're warned to not get caught up in the cares of this world. No man knows the day or the hour of the Rapture when we will meet the Lord in the "air". His second coming/return to earth however, is easy to know for those who are "left behind". The only thing necessary for our salvation is to accept Christ as Lord and Savior, and repent. Our works, regardless, are like filthy rags to God and cannot save us, only Christ's death on the cross, that no man can boast, can save us.
Aside from Jesus telling us when the Last Generation would begin, every prophesy pertaining to the End Times is evident and in place. Jesus commands us to be aware of the time, and pray always that we will be counted worthy to "ESCAPE" (not go through) ALL of these things to come upon the world, and stand before the Son of Man. Peace.