And, on the subject of recent posts...

If you don't think it's only about alcohol or drugs, and Rimbaud's Matinée d'ivresse can be taken as a...uh...motivational speech...

Matinée d'ivresse

     Ô mon Bien ! Ô mon Beau ! Fanfare atroce où je ne trébuche point ! chevalet féerique ! Hourra pour l'œuvre inouïe et pour le corps merveilleux, pour la première fois ! Cela commença sous les rires des enfants, cela finira par eux. Ce poison va rester dans toutes nos veines même quand, la fanfare tournant, nous serons rendu à l'ancienne inharmonie. Ô maintenant, nous si digne de ces tortures ! rassemblons fervemment cette promesse surhumaine faite à notre corps et à notre âme créés : cette promesse, cette démence ! L'élégance, la science, la violence ! On nous a promis d'enterrer dans l'ombre l'arbre du bien et du mal, de déporter les honnêtetés tyranniques, afin que nous amenions notre très pur amour. Cela commença par quelques dégoûts et cela finit, — ne pouvant nous saisir sur-le-champ de cette éternité, — cela finit par une débandade de parfums.
     Rires des enfants, discrétion des esclaves, austérité des vierges, horreur des figures et des objets d'ici, sacrés soyez-vous par le souvenir de cette veille. Cela commençait par toute la rustrerie, voici que cela finit par des anges de flamme et de glace.
     Petite veille d'ivresse, sainte ! quand ce ne serait que pour le masque dont tu nous as gratifié. Nous t'affirmons, méthode ! Nous n'oublions pas que tu as glorifié hier chacun de nos âges. Nous avons foi au poison. Nous savons donner notre vie tout entière tous les jours.
     Voici le temps des Assassins.

I know Patti Smith would...

For those who prefer translations...

Morning of Drunkenness
O my Good! O my Beautiful! Appalling fanfare where I do not falter! rack of enchantmants! Hurrah for the wonderful work and for the marvelous body, for the first time! It began in the midst of children's laughter, with their laughter will it end. This poison will remain in all our veins even when, the fanfare turning, we shall be given back to the old disharmony. O now may we, so worthy of these tortures! fervently take up the superhuman promise made to our created body and soul: that promise, that madness! Elegance, science, violence! They promised to bury in darkness the tree of good and evil, to deport tyrannic respectability so that we might bring hither our very pure love. It began with a certain disgust and it ends, - unable to grasp this eternity, - it ends in a riot of perfumes.

Laughter of children, discretion of slaves, austerity of virgins, loathing of faces and objects here, holy be all of you in memory of this vigil. It began with every sort of boorishness, behold it ends with angels of flame and ice.

Little drunken vigil, holy! if only because of the mask you have bestowed on us. We pronounce you, method! We shall not forget that yesterday you glorified each one of our ages. We have faith in the poison. We know how to give our whole life every day.

Now is the time of the Assassins.

At its core, it's "about" the mental state of extreme dedication, the way I read it. Yeah, ostensibly (and likely intentionally by Rimbaud) it's referring to the effect of disinhibition caused by intoxicants, but that disinhibition is recalled in the mind here, and the reference to "the Assassins" refers to the use of a substance to induce disinhibition to craziness to carry out a sacred task.

I have found mindfulness and practice work well to induce and sustain this disinhibition too. Were I a poet of Rimbaud's or Basho's caliber perhaps I could write such a description of that state, but I'm not at the moment.

If you can read it aloud in French it sounds better.