SimchaMinute by Rabbi Avigdor Miller
The great gift of bechira, free will, is only in this life. Like the Rambam says, the way a man is when he leaves this world, that’s how he remains forever. You cannot change once you leave this world. This is the great opportunity to accomplish.
Even Moshe Rabbeinu, even at techiyas hameisim (the resurrection of the dead), won’t be able to get any better. That’s why life is so precious. Every second is a glorious opportunity, you’ll never have it again. — Nachas From Children (#E-120)