Don't worry. We're here for you. You are not alone.
Kick off those shoes, pop up on the couch, rest your head on that cushion, and just relax.
Tell me, what was it that sent you "over the edge"? Was it logging on to complete your crafting writs and finding that you were not rewarded with up to 7 beautiful golden boxes of loveliness? Did you complete a daily quest only to find that you didn't need another purple Staff of Whatsit but you felt an empty space deep inside where once a little yellow box would have been? Did you run all the way to Bruma in an empty campaign only to find that they were all out of extra loot, so you only got a random green box from Bruma's last bring-and-buy sale? Did you create a new character only to find that you had [gulp] normal XP?
I think you're suffering from Post Yellow Crate Traumatic Disorder, brought on by five whole weeks of extra loot which was withdrawn faster than Thanos could have snapped it away. You're going Cold Turkey. And no-one likes 5-week-old cold turkey!
Never fear! The community is here for you! We will help you so that you can look at those daily writ boards without throwing up your lunch. You WILL be able to quest again! Maybe not now, but soon......soon. Now, repeat after me: "it wasn't important to have another mount anyway........ it wasn't important to have another mount anyway.........."
(This post was brought to you by the Post Yellow Crate Traumatic Disorder Support Group of Tamriel, or PYCDSGoT for short)