Disclaimer: I don't want to suggest that you use a habit-forming substance.
You can do it with, or without, the nic. But specifically contrasted with caffeine, it bears elaborating.
Nicotine is a remarkable substance. It's both a stimulant and a depressant. Picks you up in the morning, or when you have to pull an all nighter. But will also calm you down when you're wound up, won't it.
I've read a number of opinions by people who research that stuff scientifically, including reputable physicians. They figure that nicotine is a safer stimulant than caffeine, since it doesn't mess with your pulse/heart-rhythm, like caffeine does, nor gives your the jitters by overstimulating your nervous system. Also a thing caffeine does.
I understand that potheads and black-market dealers have given vaping a bad rep in the US.
But it lets you scratch the itch and get the ritual without murder-cancering your lungs, with or without nicotine.
You don't have to use a device that requires a blowtorch and precision wire-cutters to set up. That is, you don't have to do it the fun way.
Friends of mine use a device, one of many available, that's build for convenience and stealth. Intensity/vapor production is controlled by how hard you draw. A fire button, an LED for battery status. Very simple. One friend thinks it's great fun to use it on the commuter train. By law, vaping is treated as smoking here, so is plus-illegal on any public transport. He can hide the device in his hand, and it lets him control vapor production so well, he makes no visible clouds, and neither other passengers nor conductors will notice.
The "Yearn" by Uwell.
It's smaller than the USB cable next to the box makes it look. Imagine an older USB stick, a long one. 86.7mm x 20.2mm x 10.4mm; that is 3.41" x 0.79" x 0.41".
The cartridges are ready-to-use, you just have to fill in a juice of your choice. Heating element and wick are built in and, once those wear out, the cartridge is easily disposed of. My friend fills up multiple cartridges so he has spares, and doesn't have to mess with a bottle while he is waiting for his train.
I'm told that a full charge, from empty, is achieved within one hour on the charger that plugs in the wall outlet. My friend usually gets by comfortably on one charge between leaving home in the morning and returning in the afternoon.
If he unusually doesn't, he just recharges it on his power brick.
This is just one example. There are many devices from many manufacturers. If you want to look into this, I am of course available for advice and support in finding a device that suits you.
In case you figure e-juice prices are prohibitive, or the legislature in your state has bent over for big-tobacco and outlawed the stuff, fear not.
Mixing your own, from easily procured pharmaceutical-grade ingredients, is no great shakes.
For most people who aren't me, just buying pre-made juice and using small devices such as the one above does the job, and so much cheaper than smoking, the initial hardware purchase pays for itself within a month. That math is obviously not relevant to your situation, I mention it just to illustrate.
Me, I vape like a steam engine. On some days, I'll consume an order of magnitude more juice than those other, normal people.
Mixing my own juice, I estimate my running costs are maybe ~20% of what my pack-a-day habit would cost me.