I love your enthusiasm.  Realization of one's convictions ~ reaching certitude that what one believes is true, by testing it against life and reality and finding it impregnable to doubt ~ strengthens enthusiasm for living according to its principle.  Life without principle is not life, it is a way of death and slows and stumbles and falters and fails and sooner, rather than later, stops ~ and at some time long after that, measured in days or darkened ages, it finally leads to death because it is a way of death.  Life strengthened with certitude and conviction and principle continues enthused until we lay down and rest and expect to rise again, until one day we don't, it's a way of life.  They couldn't be more different.  Conviction is essential to every way of life.

   I would rather say that "every person reaches a conviction of necessity, to proceed through life" because without conviction, life stops.  This, I think, is irrefutable and plain, although some will contend that life goes on, and abandonment of such a conviction, either completely or in favor of another, refutes it, claiming that no conviction, then, is really reachable.  This is denial, because it is a conviction ~ and it disproves itself, reaching and holding it is a lie and reaching it and abandoning it does not prove it.

   And this is how I render the Arabic word deen ~ a subtle word, a majestic word, a word so full of meaning that it cannot itself be translated fully with entire libraries.  It can only be grasped in a context, and that is where I find it.

   The Day of Judgment is Yaum-id-Deen, the Day of Conviction.  The faithful are convinced, the deniers are convicted, Reality Alone makes that judgment and God Alone is the Master of That Day, it is entirely devoid of choosing apart from His Choice and He has chosen reality.  We all will live that Day, He has Promised it, it is a Day of Promise.

   There are other days.

   The Day of Resurrection is Yaum-al-Qiyaam, the Day of Rising, the Day of Standing, the Day of Making Straight, followed by the Day of Eternity, the Endless Day, Yaum-al-Qayyoom, both words on another subtle word, Qayyaam ~ a powerful word, a word so full of meaning no writing can hold it.

   And in it al-Yaum-al-Ba'ath-min-al-Mau'oot, the Day of Coming Forth From Death ~ the death of ignorance, the death of despair, the death of fear and doubt and oppression and tyranny and prostration, the things that stop life and turn it into a walking death without conviction and thus immobilized, not life at all.

   And Death itself, too ~ it is a conviction, but it is falsified.  On Yaum-al-Ba'ath-min-al-Mau'oot it loses its hold on those it has taken and more importantly on those it has not.

   We all will live that Day, He has Promised it, it is a Day of Promise.

   Bi-Laa Kaifa:  without "how."  We don't know how.  We can't say how.  Many speculate but few remember.

   And a last day ~ The Last Day is Yaum-al-Aakhiyrah, The Other Day, not this right now, the coming Day.  Not an evil day but a khayyir day, a Good Day; the kheerah day, the Best Day, a khiyaar Day, a Day of Choice, a Day we Choose wherein we Choose and say "Why this is like what we had before" but it's another Day entirely that never ends.  All these things reside in the Arabic word khayr ~ a generous word, a gracious word, a word so full of kindness and mercy it cannot be contained.  The Good Day is the Last Day.  It wasn't yesterday.  We all will live that Day, He has Promised it, it is a Day of Promise.

   The Day of Conviction is how we will live it.  That's what we choose today, is how to live it.  Life ~ and death ~ reside in our convictions.  Life requires conviction.