Gratitude certainly unlocks more opportunities. The neat thing about gratitude is that if you practice it you find inner peace and don’t need the opportunities to be happy.
Reviewing the day with gratitude is a core tenet of Ignatian mindfulness. I do an expanded version of the talk with my wife, with God, using a version of the instructions shown at https://www.ignatianspirituality.com/ignatian-prayer/the-exa...
So I hope that you will do the same for the rest of your lives. When things are going sweetly and peacefully, please pause a moment, and then say out loud, "If this isn't nice, what is?”
-- Kurt Vonnegut