Everything is a chemical.
Everything you feel is some combination of chemicals in your brain and body. There’s a chemical for stress, a chemical for happiness, a chemical for love. There are blends and cocktails of these chemicals, and all sorts of outside stimuli cause your brain to generate different mixes. You can introduce outside chemicals like alcohol or caffeine, but they aren’t the only things that can alter the mix.
Addiction is a mental pathway. Your brain starts producing chemicals you don’t like – or even ones that harm you – in the absence of either the chemicals you want, or the stimuli that makes your brain generate the chemicals you want, or both.
Relatedly, the more something becomes normal – your baseline – the more any deviation from it can seem very unpleasant. If someone gave you a free hundred dollars every day for a year, then suddenly stopped without warning, it can feel very much like they’re harming you or taking something from you even if they’re not, especially if you got used to the extra hundred dollars and incorporated it into your budget.
The combination of these things means you can become “addicted” to basically anything. So what does “addicted” even mean?
It means that you need something badly enough that you become a worse person if you don’t have it. You become angry, or sad, or pained, or some version of yourself you don’t want to be.
Now, we all need certain things; in a way, I’m addicted to food and water by this definition. So it’s worth noting what kinds of things you can be addicted to: Positive, neutral, and harmful.
You can be addicted to things that have a positive effect on your life. If you get really used to the sensation you get from seeing your children smile, then not getting that can put you in a really bad mood. But since the smiles of your children are wonderful things, the feedback loop here is okay. There are neutral things like video games – fine on their own, but being addicted to them can lead to negative effects because of what else they crowd out. And then there are things that are actively harmful on their own, like heroin, so an addict is choosing between two very bad experiences.
Unless the “thing” is very positive, you want to avoid addiction. Dependency. That’s often easy to see with regards to negative things like hard drugs, but is much harder to realize when it comes to neutral things in the first place.
So how do you know? What are the warning signs?
Well, if the thing itself is neutral – say, watching television – then look for the signs of dependency. What happens if you don’t watch TV for a day or two? Are you irritable, thinking about it constantly, upset that you’re missing it? Then that might be a sign that it has more control over you than is healthy. What happens if someone else suggests watching less TV, or even just doing something else for the evening? Do you snap at them, push them away, or view them as antagonistic? Your brain is looking for the chemicals it craves, and it’s not going to get them from the friend who wants to go for a jog with you, it’s going to get them from the shiny lights of the television.
Anything to excess can lead to an unhealthy life. And addiction generates excess. Be in control of your choices, and moderate them with wisdom.